In college ball, the SEC is trying an experiment with league play only that the coach is miked in with the catcher trying to speed up the game. I don't see how this will help as the catcher usually has his sign before the batter gets his. They also fear that the coach will try to control the game thru his catcher and have the catcher make trips to the mound for him to relay information. The announcers were commenting that this may speed up each pitch by 2-3 seconds...if it works