I am a 64 yo healthy male who plays tennis at the 4.5 level everyday (retired from work 4 years ago). I believe that I have strained (minor tear) my left soleus muscle. This is the muscle below the calf and some say associated with the gastroc. muscle that makes up most of the calf. I had a very bad (grade 2) tear of the mesial head of the left gastroc on August 10, 2008 and was off tennis until a year ago Christmas. I was playing some of the best tennis in memory about 3 weeks ago and felt great. two days ago after playing for about an hour and a half I was changing direction in a lateral manner and got this minor strain. So minor that I played a few more games before calling it. Loving tennis as I do I played the next day, yesterday, and almost immediately hurt the muscle again and stopped playing. Today the pain is much better and seems like the usual strain that should heal with a week or two of rest. When I was going through PT for the gastroc a year ago fall I strained my left soleus doing PT, which resolved in two weeks. This new strain of the soleus seems less painful and I feel will resolve. My questions are: 1) This seems like an odd strain since I have not had this in the previous 55 years of playing tennis. What exercises would you recommend to strengthen this muscle? 2) Does anyone know of any possible underlying condition, drug, environmental factor that could cause this odd strain? 3)Is there any condition that predisposes one to repeated muscle strains?