text: in the new tennis challenge rule, is the player allowed to seek help from others to decide (like nfl coaches)? if the answer is no, i think this would be very difficult to enforce and could be controversial on a big point. in theory, no.  the player and the player alone is supposed to decide whether or not to challenge a call.  in reality, we all can see that coaches and even fans can have an influence on decisions made by the player on whether or not to challenge.  if you watch the umpire, they will say "it's your decision to challenge or not challenge".  they get no assistance from courtside.  but just wait and watch.  abuses will begin to crop up here and there.