Assuming there's dope that has that affect. I don't think there is. I think there are drugs that make a difference in a 100m race. The current world champion came ahead of the 2nd and 3rd placed players by 0.02 and 0.03 seconds. A very long Tour De France run winner might finish 5-10 seconds or less ahead of the next. That kind of edge is not prevalent in a 90 minute game of football where the tactical cohesion of 11 different players is more important than all of them being able to run for 90 minutes (which they will be able to anyway).