Playing mixed in a usta tournament this weekend and one of refs comes by during warmup and says I can't warmup with my partner. He makes us warmup with the opponent....not that the opponent cared or anything but I've been playing these tournaments years and never heard of this rule. I like warming up with my regular partner, we have our routine down and we're consistent enough to actually get warmed up. I can't stand trying to warmup with someone who has trouble keeping the ball coming back to you. I can't find anything in the books, so maybe you guys know. So...was the ref full of it? Thanks!