God, I'm so sick of everything call related - challenging when the player already knows the results to get a replay or just to stall, looking to the box to decide whether to challenge, challenging just to annoy the other player, checking the mark before challenging, waiting too long to challenge.
I actually agree with Mary Carillo. The technology is there, use it. On every point. Have the chair ump have a small screen so he can immediately review all calls if need be and assure the player whether it is in or out. Don't make a big deal about it. Quit the pointless drama.
Are linespeople such an integral tradition in tennis that we must have them. If yes, then have them to make the obvious calls and if anything is in question, allow the chair ump to quickly render a decision.
The whole challenge allotment scheme is stupid.
Perfect example, Tsonga just hit a serve out, came in and hit a volley winner. Djokovic could not have challenged in time, unless he didn't return the ball. Why, since we know it was clearly out, should Djoker lose that point? It's stupid. And, this is coming from someone rooting for Tsonga.