I had played a few sets last week after not playing matches (but playing a lot of clinics). After the last match I felt very tired and was breathing hard the whole match, but otherwise didn't have any pain. When I got home my chest started to really hurt on the left side. It was hurting all the time, but especially with movement. I've been resting the last few days and now it only hurts if I move suddenly, but it still feels tender. My theory is that I hurt it hitting so many 2 handed backhands. In my 2hr + match my opponent kept hitting high balls to my backhand side and played mainly to my backhand. During most clinics I'm hitting mainly volleys or forehands. Maybe I'm asking too late, but does anyone have any ideas on how to speed up the healing process and how long it should take to heal? I'm supposed to play another tournament match next week and I hoping to be training for it instead of nursing an injured chest.