I played about 3 hours yesterday, with my pure drive strung up with ashaway crossfire at 54/52 lbs. i had to use this setup because i am currently all out of polyester, and the ball flies on me with regular synthetic gut. man, it was a bad idea. i woke up this morning, my entire left arm hurt, shoulder blades to fingertips. i've never had any sort of issue like this, in 7 years of playing tennis. it's extremely uncomfortable, and i've found i can't do much with my arm, for it will cause pain. tennis is absolutely out of the question for today, which is terrible considering 75 degree temperature. is this tennis elbow?