Tennis is an individual sport. The player is in charge of their own decisions. I wonder how this plays out in baseball. Vlad is up in the 3rd inning and the Jays are winning 2-0. A close strike call goes against him, and, like he almost always does, he shows his emotion and calls for a challenge.
But Schneider doesn't want him wasting a challenge in the 3rd inning, oh and by the way, the Jays video staff are watching and they know the umpire made the correct call. Now what? In this video - it was the batter who just immediately signaled for a challenge. I just can't imagine teams will give players that freedom and thus there will be constant looking back into the dugout to wait for the sign to challenge it. We might get to the point that the Manager wears a headset like in the NFL so he's in constant communication with the video room.
I'm not on board with this yet. Why not just put an ear piece in the umpire and get every ball/strike call correct?