I've done a fair bit of experimenting with wrist braces with which I can still play tennis. The Ace version on the lower left has proven to be the best for me. It has two removable pieces of metal. I only leave the one on the back of the hand in, as the one on the palm side interferes with holding the racquet. Sweat in the palm portion is a huge problem, so I own several of them. I also cut out the little piece of rubber cushioning from the palm area. Wearing a glove also helps with the sweat issue.