I keep thinking that nowadays in Formula 1 engineers like Adrian Newey or Ross Brawn are still more helpful than EPO or CERA.
Maybe a new invention could be marketed for football, and other sports. I propose a small vibrating receiver (like within mobile phones) to be taped to players' skin. A motion sensing transmitter is placed inside players boots or taped to legs. The transmitters know the ball's position also, via another sensor or via some camera system. The transmitter detects when a player with the ball moves his foot to kick it, and transmits the expected direction and weight of the pass as information to the other players' receivers - particularly to any player who is close to the likely intended target of the pass (or the computed location the ball will likely reach). The receiver will vibrate in a directed way to prompt the player to run in the correct direction.
This means a striker can make runs to receive a pass without having to watch the play with his own eyes. And at corners, the sensors will work out where the ball will likely reach and buzz the correct players to try to contest it. If the opposition players' motion could also be tracked, perhaps the system can help goalkeepers save penalties too.