Friday, July 4, 2014

Premier League back four groups: Update


Back in March I put up a fan post over at the always sexy Cartilage Free Captain looking at how many different back four combinations Spurs had used up to that point in the season. I also did the same for Arsenal, Chelsea, Liverpool and Manchester City to see how they compared. Mostly I wanted to illustrate how rarely Spurs best four defenders actually took the field together (spoiler: zero times). I recently decided to go back and update the data to include the remainder of the Premier League season, as well as any additional competitions the teams were involved in after March 11th. I should note that since ESPNFC’s new layout sucks and constantly crashes my browser, I switched to using www.football-lineups.com for the lineups. UPDATE: Realized it might not be clear, all this data refers to players who started the match, not subs.



What happened since March 11? Well, Spurs played an additional 11 matches in all competitions and managed to use an additional five(!) different back four combinations, including that mind-melting Naughton, Sandro, Fryers, Rose defense against Benfica.

By comparison, Arsenal used only two more different combinations through the rest of their season, which included the second leg against Bayern Munich and their final two FA Cup matches. Arsenal used their most common foursome: Sagna, Mertesacker, Koscielny and Gibbs a whopping 20 times during the season. Spurs most frequent back four: Walker, Dawson, Chiriches and Rose appeared together only seven times. Walker, Kaboul, Vertonghen and Rose, Spurs’ ideal back four (at least pre-season) still didn’t have a single appearance together.

Chelsea led this table by a mile, using only a single additional combination (thanks to Tomáš Kalas’s two appearances) and a total of 11 all season.

Liverpool, who seemed to be mixing and matching every week, finished the season with 19 different combinations, but used only their two most frequent lineups (Johnson, Agger, Skrtel, Flanagan and Johnson, Skrtel, Sakho, Flanagan) after March 11th.  Despite ultimately falling short in their title bid, Liverpool lost only once in that stretch, in the stunning 2-0 defeat to Chelsea.

Finally, the champions Manchester City used only one additional defensive foursome but finished the season trailing only Spurs in terms of the total number used (21). City's shaky back line was often cited as their major weakness, but their thunderous offensive production clearly made up for it.

The additional data doesn’t really shed any new light, beyond reinforcing the fact that Spurs were a mess at the back in every possible way. They used the most different lineup combinations, and their most common foursome appeared together the fewest times. Not the ideal recipe for success. One manager meltdown and one manager composed mostly of chewing gum were the two primary reasons for all the chaos, but injuries were a constant, debilitating thorn in the side of team trying to create any kind of defensive cohesion. We can only hope that under Pochettino the team achieves some more stability (and health!) at the back.

For ease of use, here is the final data in order or number of total combinations, most popular combination, and how many times it was used. 

Spurs: Total combinations: 22, Most frequent: Walker, Dawson, Chiriches, Rose (7 appearances)

Arsenal: Total combinations: 14, Most frequent: Sagna, Mertesacker, Koscielny, Gibbs (20 appearances)

Chelsea: Total combinations: 11, Most frequent: Ivanovich, Terry, Cahill, Dave (26 appearances)

Liverpool: Total combinations: 19, Most frequent: Johnson, Agger, Skrtel, Flanagan (9 appearances)

Manchester City: Total combinations: 21, Most frequent: Zabaleta, Kompany, Dimichelis, Kolarov (11 appearances).

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