I played softball for many years, then about 4 years ago I "retired" from the game due to what seemed to be consistent injuries. Pulled a Hamstring bad enough to keep me out of the game for a year. When I came back I ended breaking a fibula, but that was my own fault I was showing off. I have stayed active and run about 20 miles a week.
This year I picked up with a team and pulled my Hamstring in the first game of a preseason tournament. It healed or so I thought and I was feeling good then in my first game back a month later had the exact same injury. It hurts like hell and I'm debating the retirment thing again. I stretch, run, and stay pretty good shape. Am I just getting old?

You might check out this site:
http://www.rice.edu/~jenky/sports/ham.inj.html

Here's something else I found:

• Strengthening the hamstrings and other lower limb muscles is essential
to restore proper function in the lower limb
• Pay particular attention to developing a good strength balance between the quadriceps (front thigh muscles) and the hamstrings
• Strengthening of the gluteus maximus (buttocks) and gastrocnemius
(long calf muscle) is also important
• Holding the leg in a fixed position for 10 to 20 seconds (isometric exercise) is safe until the wound is significantly healed and also prevents muscle wasting
• As improvements allow, active (self-movement) and functional strength exercises should follow
• Some strength exercises also need to be performed as the muscle lengthens (eccentric work) and/or at fast speeds to gain improvements
• Strength can be measured by contracting against resistance provided by another person. Ask them to make a comparison of strength between legs.

I'd say that you don't need to retire from softball, but maybe need some strength training.

That's great advice, 20 months later; the guy may be healed, lame or dead by now...

Remind me not to call you for medical help in an emergency, OK?? :^O

Maybe he's all three :^O

And as a practitioner of the medical arts, you're taking credit for the healing, right??