Liverpool

While I absolutely remain a fan of Liverpool Football Club, and had a fascinating tour of their facilities this morning, I’m not such a big fan of the city itself. Somehow overall the experience there (barring some taxi rides and the Anfield experience itself) was not particularly great.

For starters, it doesn’t help that the city has lousy weather. Being up north, in England and on the coast means there are strong winds, and it can be pretty bad when it rains. Then, when I got off the train station last night, the city seemed dead and the roads that I walked on until I found a taxi were deserted.

And this afternoon, after I had finished my stadium tour and went to the renowned Albert Docks, the experience there was similar as well. Rather dull and without too many people around. And once again the weather didn’t help matters.

And then there is the hotel I stayed in last night. The check in and check out were rather pleasant and I mostly got a good night’s sleep as well, but a former office building converted to a hotel can be a bit depressing. The room was rather small, with the bed stuck to two walls. And a part of it had been earmarked for the bathroom anyway. Even this morning when I got out of the hotel the area wasn’t really bustling (this was in central Liverpool).

And while I found the breakfast to be pretty good (I got a a “large English breakfast”), the service and decor of the restaurant wasn’t particularly appealing. And as I got out of the restaurant, I saw a “up for sale” board on the door!

Anyway, it’s just a few data points. However, in hindsight I feel less bad now about not booking my ticket to York yesterday itself, which would’ve cut my journey cost by 50%. Without a booked ticket, not finding the place particularly interesting meant I could quickly get to the station and take the next train onward.

So here I am, nearing York (I’m finishing this post now in a hurry since I should reach any time now, and I don’t want to scramble). The views on the journey have been rather stunning. The big breakfast meant that I didn’t need to have lunch today. And I had some beer and peanuts and cake on the train and am feeling happy about it now!

The only sore point is that soon after I had bought beer from the cart on the train, the conductor announced that the toilets on train aren’t working. In any case, York isn’t far away!

Cheers

This is Anfield

 

I had a massive fanboy time this morning, as I went on my long-awaited (nearly 14 years) pilgrimage to Anfield, home of the Liverpool Football Club. As I had mentioned in my post last night, this was the explicit purpose of my visit to Liverpool, and I had left home with only three bookings – train to Liverpool, hotel in Liverpool and the Anfield tour.

So after having polished off a “large Full English” (in hindsight, I’m thankful for that) at a local cafe close to my hotel, I took an Uber to Anfield. The driver was also a Liverpool fan and we spent time chatting about last afternoon’s game, when Liverpool played insipidly to draw across Stanley Park with Everton. I was in good time for the tour (that was to start at 11), and spent the time walking along the outside of the Main Stand.

There are benches dedicated to Liverpool’s greatest players of all time, and the floor is tiled with names of members (not all members I think – perhaps those that made contributions to rebuild the Main Stand 3 years ago). I paid my respects at the Hillsborough Memorial and walked back to the Kop end where the entrance to the Stadium Tour is situated.

The tour started on the sixth floor of the newly redeveloped Main Stand (if you’ve wondered why TV broadcasts of Liverpool games suddenly started showing a very high angle, this is the reason). Our guide Terry first took us to the hall where there were photos of “Liverpool’s six great managers”.

The choices were interesting – Shankly, Paisley, Fagan, Dalglish, Houllier and Benitez. As the Elo ratings show, these were all definitely managers who improved Liverpool, sometimes in a significant way (though the last two also let things slip considerably towards the end of their reigns.

I sensed some sort of discomfort in the group. Evidently, a majority were Liverpool fans, but talks about “the purpose of the club being to win trophies” and talking up of the number of trophies won so far brought up the painful reality that we’ve “AJMd” on a league, a europa league and a champions league in the last five years itself, and look on course to AJM the league once again. Nobody really wanted to point out that things aren’t going as well as we would like.

In any case, the tour moved on and our guide Terry was excellent, though sometimes he went back to familiar cliches. Describing the miracle of Istanbul, for example, he made the familiar joke of “Milan had Kaka, and we had Djimi Traore, and yet we managed to win”.

We moved on to a view of the pitch from the highest tier of the main stand, my first impression was that this is a rather “cosy” stadium. Now, the only other stadiums I’ve been to are the behemoths Camp Nou and Wembley, and in comparison to them, Anfield looked rather intimate. That also suggested why the crowd at Anfield is sometimes like “Liverpool’s 12th man”, as a poster outside the away dressing room claimed.

The small stadium means the crowd noise can reverberate easily around the stadium. The Anfield Road End is yet to be redeveloped, and once that happens the stadium will become “taller”, meaning the noise levels might get higher. Looking at the pitch from up the Main Stand gave me another regret – that I haven’t watched a game at Anfield (though I did watch Liverpool play at Wembley). Hopefully sometime in this lifetime I’ll fulfil that!

There were cutouts of various players placed near the dressing rooms. Salah’s was the most popular as everyone lined up to take a selfie with him. Rather than waiting there, I managed selfies with cutouts of all of Firmino, van Dijk and Alisson. The dressing rooms were impressive (especially the Home dressing room). I also found the differences between home and away dressing rooms interesting – the home room is soundproof while the away room isn’t. The home room has lighting control to adjust the lighting to the pitch. The away room has no such facilities. These are subtle differences we don’t appreciate as TV viewers, but can have a profound impact on the game.

And based on this, I don’t mind the draws at Manchester United and Everton that much!

 

You’ll Never Walk Alone

I first became a fan of Liverpool FC in April 2005, on the day of the first leg of their Champions League semifinal against Chelsea. While I was in London for a month and half after that, I never really executed on the pilgrimage to Anfield. Instead I went on trips around the country which my friends had planned.

For a long time, this was on my To-Do list. Yet, I continued to be lazy. I moved to England exactly two years ago, but had somehow kept putting off my trip to Liverpool. The initial plan had been to do it with family, carrying my daughter as she put her hands on the “this is anfield” signboard.

Finally, as it happens, I’ve made the trip just before we end our current stint in London and move back to India. And unlike that plan of that photo-op of my daughter with her hand on the “this is anfield” sign, I’ve come to Liverpool alone.

I don’t know the last time I had one an “unplanned trip”. This time I did some planning, though, but haven’t booked much. As things stand now, I’ve only booked my train to Liverpool (which I took this evening), my hotel for the night (where I’m writing this from) and the Anfield tour for tomorrow morning.

In my eagerness to get to the hotel after the train rolled in to Liverpool Lime Street at 10:20 PM tonight, I exited the station without bothering to see where the taxi rank was. And then google maps told me I could get a bus nearby, so I walked alone for a bit. There was a bunch of bus stops but it was unclear what bus I should take. So I walked on.

And presently an empty taxi came that way. And I hopped in. The taxi driver told me that my hotel is “one of the several old office complexes that have now become hotels” in Liverpool, “all thanks to the football”, he said. The room does look weird. It’s among the smallest hotel rooms I’ve stayed in, perhaps smaller than the one in Hong Kong.

I dont have the enthu to get up now, so here’s a photo of my room from my bed (that glass wall you see on the left is the bathroom). I trust what my taxi driver told me – I can fully imagine this little space having been a meeting room or office cabin once upon a time.

Anyways, off to bed now. Anfield beckons tomorrow morning! Never mind today’s derby result, and that we’re behind in the title race now.

Built by Shanks

This morning, I found this tweet by John Burn-Murdoch, a statistician at the Financial Times, about a graphic he had made for a Simon Kuper (of Soccernomics fame) piece on Jose Mourinho.

Burn-Murdoch also helpfully shared the code he had written to produce this graphic, through which I discovered ClubElo, a website that produces chess-style Elo ratings for football clubs. They have a free and open API, through which Burn-Murdoch got the data for the above graphic, and which I used to download all-time Elo ratings for all clubs available (I can be greedy that way).

So the first order of business was to see how Liverpool’s rating has moved over time. The initial graph looked interesting, but not very interesting, so I decided to overlay it with periods of managerial regimes (the latter data I got through wikipedia). And this is what the all-time Elo rating of Liverpool looks like.

It is easy to see that the biggest improvement in the club’s performance came under the long reign of Bill Shankly (no surprises there), who took them from the Second Division to winning the old First Division. There was  brief dip when Shankly retired and his assistant Bob Paisley took over (might this be the time when Paisley got intimidated by Shankly’s frequent visits to the club, and then asked him not to come any more?), but Paisley consolidated on Shankly’s improvement to lead the club to its first three European Cups.

Around 2010, when the club was owned by Americans Tom Hicks and George Gillett and on a decline in terms of performance, this banner became popular at Anfield.

The Yanks were subsequently yanked following a protracted court battle, to be replaced by another Yank (John W Henry), under whose ownership the club has done much better. What is also interesting from the above graph is the managerial change decisions.

At the time, Kenny Dalglish’s sacking at the end of the 2011-12 season (which ended with Liverpool losing the FA Cup final to Chelsea) seemed unfair, but the Elo rating shows that the club’s rating had fallen below the level when Dalglish took over (initially as caretaker). Then there was a steep ascent under Brendan Rodgers (leading to second in 2013-14), when Suarez bit and got sold and the team went into deep decline.

Again, we can see that Rodgers got sacked when the team had reverted to the rating that he had started off with. That’s when Jurgen Klopp came in, and thankfully so far there has been a much longer period of ascendance (which will hopefully continue). It is interesting to see, though, that the club’s current rating is still nowhere near the peak reached under Rafa Benitez (in the 2008-9 title challenge).

Impressed by the story that Elo Ratings could tell, I got data on all Premier League managers, and decided to repeat the analysis for all clubs. Here is what the analysis for the so-called “top 6” clubs returns:

We see, for example, that Chelsea’s ascendancy started not with Mourinho’s first term as manager, but towards the end of Ranieri’s term – when Roman Abramovich had made his investment. We find that Jose Mourinho actually made up for the decline under David Moyes and Louis van Gaal, and then started losing it. In that sense, Manchester United have got their sacking timing right (though they were already in decline by the time they finished last season in second place).

Manchester City also seem to have done pretty well in terms of the timing of managerial changes. And Spurs’s belief in Mauricio Pochettino, who started off badly, seems to have paid off.

I wonder why Elo Ratings haven’t made more impact in sports other than chess!

What Ails Liverpool

So Liverpool FC has had a mixed season so far. They’re second in the Premier League with 36 points from 14 games (only points dropped being draws against ManCity, Chelsea and Arsenal), but are on the verge of going out of the Champions League, having lost all three away games.

Yesterday’s win over Everton was damn lucky, down to a 96th minute freak goal scored by Divock Origi (I’d forgotten he’s still at the club). Last weekend’s 3-0 against Watford wasn’t as comfortable as the scoreline suggested, the scoreline having been opened only midway through the second half. The 2-0 against Fulham before that was similarly a close-fought game.

Of concern to most Liverpool fans has been the form of the starting front three – Mo Salah, Roberto Firmino and Sadio Mane. The trio has missed a host of chances this season, and the team has looked incredibly ineffective in the away losses in the Champions League (the only shot on target in the 2-1 loss against PSG being the penalty that was scored by Milner).

There are positives, of course. The defence has been tightened considerably compared to last season. Liverpool aren’t leaking goals the way they did last season. There have been quite a few clean sheets so far this season. So far there has been no repeat of last season’s situation where they went 4-1 up against ManCity, only to quickly let in two goals and then set up a tense finish.

So my theory is this – each of the front three of Liverpool has an incredibly low strike rate. I don’t know if the xG stat captures this, but the number of chances required by each of Mane, Salah and Firmino before they can convert is rather low. If the average striker converts one in two chances, all of these guys convert one in four (these numbers are pulled out of thin air. I haven’t looked at the statistics).

And even during the “glory days” of last season when Liverpool was scoring like crazy, this low strike rate remained. Instead, what helped then was a massive increase in the number of chances created. The one game I watched live (against Spurs at Wembley), what struck me was the number of chances Salah kept missing. But as the chances kept getting created, he ultimately scored one (Liverpool lost 4-1).

What I suspect is that as Klopp decided to tighten things up at the back this season, the number of chances being created has dropped. And with the low strike rate of each of the front three, this lower number of chances translates into much lower number of goals being scored. If we want last season’s scoring rate, we might also have to accept last season’s concession rate (though this season’s goalie is much much better).

There ain’t no such thing as a free lunch.

Biases, statistics and luck

Tomorrow Liverpool plays Manchester City in the Premier League. As things stand now I don’t plan to watch this game. This entire season so far, I’ve only watched two games. First, I’d gone to a local pub to watch Liverpool’s visit to Manchester City, back in September. Liverpool got thrashed 5-0.

Then in October, I went to Wembley to watch Tottenham Hotspur play Liverpool. The Spurs won 4-1. These two remain Liverpool’s only defeats of the season.

I might consider myself to be a mostly rational person but I sometimes do fall for the correlation-implies-causation bias, and think that my watching those games had something to do with Liverpool’s losses in them. Never mind that these were away games played against other top sides which attack aggressively. And so I have this irrational “fear” that if I watch tomorrow’s game (even if it’s from a pub), it might lead to a heavy Liverpool defeat.

And so I told Baada, a Manchester City fan, that I’m not planning to watch tomorrow’s game. And he got back to me with some statistics, which he’d heard from a podcast. Apparently it’s been 80 years since Manchester City did the league “double” (winning both home and away games) over Liverpool. And that it’s been 15 years since they’ve won at Anfield. So, he suggested, there’s a good chance that tomorrow’s game won’t result in a mauling for Liverpool, even if I were to watch it.

With the easy availability of statistics, it has become a thing among football commentators to supply them during the commentary. And from first hearing, things like “never done this in 80 years” or “never done that for last 15 years” sounds compelling, and you’re inclined to believe that there is something to these numbers.

I don’t remember if it was Navjot Sidhu who said that statistics are like a bikini (“what they reveal is significant but what they hide is crucial” or something). That Manchester City hasn’t done a double over Liverpool in 80 years doesn’t mean a thing, nor does it say anything that they haven’t won at Anfield in 15 years.

Basically, until the mid 2000s, City were a middling team. I remember telling Baada after the 2007 season (when Stuart Pearce got fired as City manager) that they’d be surely relegated next season. And then came the investment from Thaksin Shinawatra. And the appointment of Sven-Goran Eriksson as manager. And then the youtube signings. And later the investment from the Abu Dhabi investment group. And in 2016 the appointment of Pep Guardiola as manager. And the significant investment in players after that.

In other words, Manchester City of today is a completely different team from what they were even 2-3 years back. And they’re surely a vastly improved team compared to a decade ago. I know Baada has been following them for over 15 years now, but they’re unrecognisable from the time he started following them!

Yes, even with City being a much improved team, Liverpool have never lost to them at home in the last few years – but then Liverpool have generally been a strong team playing at home in these years! On the other hand, City’s 18-game winning streak (which included wins at Chelsea and Manchester United) only came to an end (with a draw against Crystal Palace) rather recently.

So anyways, here are the takeaways:

  1. Whether I watch the game or not has no bearing on how well Liverpool will play. The instances from this season so far are based on 1. small samples and 2. biased samples (since I’ve chosen to watch Liverpool’s two toughest games of the season)
  2. 80-year history of a fixture has no bearing since teams have evolved significantly in these 80 years. So saying a record stands so long has no meaning or predictive power for tomorrow’s game.
  3. City have been in tremendous form this season, and Liverpool have just lost their key player (by selling Philippe Coutinho to Barcelona), so City can fancy their chances. That said, Anfield has been a fortress this season, so Liverpool might just hold (or even win it).

All of this points to a good game tomorrow! Maybe I should just watch it!

 

 

Revenue management at Liverpool Football Club

Liverpool Football Club, of which I’ve been a fan for nearly eleven years now, is in the midst of a storm with fans protesting against high ticket prices. The butt of the fans’ ire has been the new £77 ticket that will be introduced next season. Though there will be few tickets that will be sold at that price, the existence of the price point has been enough to provoke the fans, many of whom walked out in the 77th minute of the home draw against Sunderland last weekend.

For a stadium that routinely sells out its tickets, an increase in ticket prices should be a no-brainer – it is poor revenue management if either people are scrambling for tickets or if there are empty seats. The problem here has been the way the price increase has been handled and communicated to the fans, and also what the club is optimising for.

At the outset, it must be understood that from a pure watching point of view, being in a stadium is inferior to being in front of a television. In the latter case, you not only have the best view of the action at all points in time, but also replays of important events and (occasionally) expert commentary to help you understand the game. From this point of view, the reason people want to watch a game at the ground is for reasons other than just watching – to put it simply, they go for “the experience”.

Now the thing with stadium experience is that it is a function of the other people at the stadium. In other words, it displays network effects – your experience at the stadium is a function of who else is in the stadium along with you.

This can be complex to model – for this could involve modelling every possible interaction between every pair of spectators at the ground. For example, if your sworn nemesis is at the ground a few seats away from you, you are unlikely to enjoy the game much.

However, given the rather large number of spectators, these individual interactions can be ignored, and only aggregate interactions considered. In other words, we can look at the interaction term between each spectator (who wants to watch the game at the ground) and the “rest of the crowd” (we assume idiosyncrasies like your sworn enemy’s presence as getting averaged out).

Now we have different ways in which a particular spectator can influence the rest of the crowd – in the most trivial case, he just quietly takes his seat, watches the game and leaves without uttering a word, in which case he adds zero value. In another case, he could be a hooligan and be a pain to everyone around him, adding negative value. A third spectator could be a possible cheerleader getting people around him to contribute positively, organising Mexican waves and generally keeping everyone entertained. There can be several other such categories.

The question is what the stadium is aiming to optimise for – the trivial case would be to optimise for revenue from a particular game, but that might come at the cost of stadium “atmosphere”. Stadium atmosphere is important not only to galvanise the team but also to enthuse spectators and get them to want to come for the next game, too. These two objectives (revenue and atmosphere) are never perfectly correlated (in fact their correlation might be negative), and the challenge for the club is to price in a way that the chosen linear combination of these objectives is maximised.

Fundamental principles of pricing in two-sided markets (here it’s a multisided market) say that the price to be charged to a participant should be a negative function of the value he adds to the rest of the event (to the “rest of the crowd” in this case).

A spectator who adds value to the crowd by this metric should be given a discount, while one who subtracts value (by either being a hooligan or a prude) should be charged a premium. The challenge here is that it may not be possible to discriminate at the spectator level – other proxies might have to be used for price discrimination.

One way to do this could be to model the value added by a spectator class as a function of the historic revenues from that class – with some clever modelling it might be possible to come up with credible values for this one, and then taking this value into account while adjusting the prices.

Coming back to Liverpool, the problem seems to be that the ticket price increase (no doubt given by an intention to further maximise revenue takings) has badly hit fans who were otherwise adding positive value to the stadium atmosphere. With such fans potentially getting priced out (in favour of fans who are willing to pay more, but not necessarily adding as much value to the ground), they are trying to send a message to the club that their value (toward the stadium atmosphere) is being underestimated, and thus they need greater discounts. The stadium walkouts are a vehicle to get across this point.

Maximising for per-game revenue need not be sustainable in the long term – an element of “atmosphere” has to be added, too. It seems like the current worthies at Liverpool Football Club have failed to take this into account, resulting in the current unsavoury negotiations.

Now that I’ve moved to Barcelona, Liverpool FC need not look too far – I’ve done a fair bit of work on pricing and revenue management, and on two-sided markets, and can help them understand and analyse the kind of value added by different kinds of spectators, and how this can translate to actual revenues and atmosphere. So go ahead and hire me!