Yoneyama
Hall of Fame
Thats interesting. When you have had injuries you can see it on players when they are sheltering it. I never had back injuries and for me its hard to notice. I have knee injuries and I can see when Rafa is troubled w it.
Do you think 1HBH tend to get more back injuries? Looks like it. Do u have 1HB?
Thiem has a similar serve to Federer who also have back issues and a 1BH.
Yes I have a OHBH. I think stabilisation is really important with OHBH. I switched from two hander and found initially I would just leverage my hitting arm without proper torso rotation, and my left arm would just sort of hang there. You can see Thiem do this often... what happens is that your hitting arm violently swings across the body and because the torso hasn't caught up and the stabilising arm hasn't provided balance it can put a lot of straight on the shoulder and the muscles which attach the shoulder to the back (rhomboids I think they are but don't quote me).
I cured my OHBH problems by placing a lot more emphasis on torso rotation and getting that stabilising arm up and working. I focus on Wawrinka's motion as I believe it is the perfect model for torso rotation... a big coil and unload. The torso comes around with the arm and this protects it, and his stabilising arm also extends well and balances the body.