Nobody knows what prevents hamstring pulls. Anybody who says they know for sure, can't prove it scientifically cuz there is no definitive answer. That being said, being fast and having a history of hamstring problems are risk factors for future ones. So with that, I give you this: HT.com news story re: injured Texans veterans Here's some food for thought and discussion: 1. The Texans were one of the teams that had the most players on IR last season. Do the Texans risk making injuries worse by working players through injuries at non-critical times of the year? For example, Mario injures toe, ends up with a foot problem. Was he being pushed too much. Running hard on a hamstring that isn't right isn't likely to make it better. As an aside, I would like the real media to ask the Texans what they've done in response to the IR issues of last year. They said they were going to examine their practices to make sure that this wasn't just bad luck, and I am wondering what they have done. 2. Should the Kubiak comments be taken at face value? Just a question asked about a player and answered? Are his answers just the writing on the wall of an exit, or pushing a player he believes has tremendous potential and believes he need a fire lit under him? (the theory that a coach never yells at a player he figures can't play anyways).