If it's Grade 1, he can play. From a training standpoint, the MRI would determine which fibers, IF ANY, have been affected. They will treat like crazy, they will warm him up, he might have a wrap on his hamstring or go the compression wrap pants look, but with Pop, TP would be monitored like a pitcher with a pitch count.
I will say that, if you are an athlete, and you do have cramping issue,
one of the newest ways to stop that from happening is to drink...Pickle Juice. Believe it or not, the brine in Pickle Juice gives the body what it craves to help combat cramping.
http://well.blogs.nytimes.com/2010/0...muscle-cramps/
Compression Pant
