Instant replay can't be used soon enough. The player challenge part will be fun but this will also help cut down on Andy wasting his time and energy griping at the chair ump instead of concentrating on the match. Once he sees it on replay, that's it. And also because Andy is more often than not right about calls, he can feel vindicated and make faces at the ump.
Hi Marlene, how's preggie?
Congrats to Andy Roddick, 2017 Hall of Fame!
"I beat him the last time. He's lucky I retired." — Andy Roddick on RF
You're assuming that Andy's a real tennis player (a dignified one at that)
and that he has restraint (ability to not be a copycat, stereotypical American brat who wants rewards for no effort. And, have the insight to see that it's an insult to himself + fans when he welcomes the belief that he's a chump, fraud player).