Ive been throwing a pretty good looking sinker recently, exept its been giving me arm pains. After I throw 2-3 I start to get a sore kind of sharp pain in the inside part of my arm near the back of the elbow to half way up the my arm towards the shoulder. As far as i knew sinker gave little to no pain but maybe I heard wrong.
I throw my sinker like a 2 seamer but I put pressure with my middle finger and snap my wrist down and to the right when I release.
Any help would help as I really would like to start throwing this again as it is my only good payoff pitch.