Silly question. How to tell the difference between a hamstring cramp and muscle pull?

[ChessGuy]

Was doing a few sprints as my last preparation for a 300yd run test I have this Thursday.

On my third and last sprint I got a very painful something on my right hamstring. Had to stop. At first could barely walk. Now I can walk fine with minimal pain.

I can still feel it. Massaging it relieves the pain for a few minutes. This was a very sharp muscle pain the area seemed to be the size of a US Quarter...

Any advice would be appreciated. I've never had a hamstring cramp or any type of muscle pull.

[Mark Rippetoe]

A cramp goes away now, a belly tear goes away in a week if it's rehabbed.

[ChessGuy]

Thanks, Rip. Still hurts when I walk. Might be a little tear. Gets better, for a few minutes after stretching. Timing sucks on this. I have a 300yd run test this Thursday.