Quote: silver2 "How much real time data do the coaches get from the tracker devices that the players wear? Could they be a factor in deciding if and when a player is substituted?'"
I don't think they are. Virtually every coach in every team sport does [isubs by habit [/i
In football, there's ALWAYS substitutions on the hour mark. Then just before the 90th minute, to stall play. Bar maverick decisions like Mourinho did (mainly to say [ilook at me) [/i, we know what we're going to get
You've been able to set your clock by rotation in RL for years.