Doing my own Googling, so I won’t get yelled at, I find this from www.wimbleondontennis.co.uk :
The point is lost if:
e. The player deliberately carries or catches the ball in play on the racket or deliberately touches it with the racket more than once; or
f. The player or the racket, whether in the player’s hand or not, or anything which the player is wearing or carrying touches the net, net posts/singles sticks, cord or metal cable, strap or band, or the opponent’s court at any time while the ball is in play
Case 8: A player standing outside the court hits the ball or catches it before it bounces and claims the point because the ball was definitely going out of the correct court.
Decision: The player loses the point, unless it is a good return, in which case the point continues.
My point is that I found a “feed” of Federer vs Lopez in the US Open, and Federer clearly catches a return of serve with his bare hand, thigh high, to win Game 8. He was standing on the baseline, and the ball was clearly going to land 6 or 7 feet out. Was this a technical violation of the rules played at the US Open, but which were ignored as a gentlemanly bit of play? Federer had already tried to be friendly and point out to Lopez that he was now serving with new balls.
Is this like the coach’s box in baseball, which everyone stand outside of, and for which the rules are universally ignored, unless someone wants to complain, but no one does?
The Condensed USTA Rules don’t make any mention of catching the ball with the body. Everything else I find after a little searching seems to be a reprint of the Wimbledon rules.