I've been wrestling with this. I have been tensing my wrist upon contact when hitting my one handed backhand. When I see guys like Federer finish, the wrist is clearly loose, but is it loose on contact? On the forehand, a loose wrist is the way to hit it. It simply means more action, but is it the same on the one handed backhand? When I used to leave the wrist loose, I would send quite a few balls long. I realize the shot can be hit both ways, but which way should I be sticking to? I.E. which way is optimal? Seems like down the line it almost has to be tense so the wrist doesn't pull it cross-court. Thoughts?