Back in March I put up a fan post 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 crashes my browser, I switched to using www.football-lineups.com for the lineups.
You can find the original post here: http://cartilagefreecaptain.sbnation.com/2014/3/12/5498534/the-back-four
I posted my updated research and some additional analysis here (there are also a couple of other posts for anyone who feels like hanging around): http://lilywhiteheat.blogspot.com/2014/07/premier-league-back-four-groups-update.html