I picked up a younger relative last night from an odd soccer practice match. The coach had the girls freshman soccer team (11 players) play against 7 guys from the boys varsity soccer team, and the guys lost 4-3. On the drive back, we were speculating on how many people it would take to defeat an elite pro soccer team if the players were somewhat athletic (sub 6 mile and a sub 14 100m) but had zero soccer experience.
Given those conditions, how many of them would be needed to be on the field in order to defeat a world-class soccer team? Would 25 players be enough? Assume that only one goalkeeper is allowed for both teams.