In a recent-ish podcast by The Transfer Flow podcast, host Ravi Ramineni made an off hand comment that while working for the Seattle Sounders, the team had noticed that they could switch out up to three of their regular starters for bench players in a given game without causing too much of a problem. Any more than that and they began to run into trouble as a team.
This idea has been covered before - see American Soccer Analysis’ prior article on the Curtin Theorem by Eliot McKinley and Mike Imburgio - but the specific mechanism in question remains a bit of a mystery.
The connection between players and their level of familiarity with each other as a whole is a very important piece of the decision making of coaches, but it’s hard to quantify in a meaningful way. There’s also usually a tension between the coaches’ lineup choices and the desires of the fans, who often see the players on the bench as more exciting. Is the emphasis on familiarity and connection that important? Can we measure that on-field chemistry?
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