(KTVI – FOX2now.com) – The Cardinals season starts with a bang: Yadier Molina, showing no signs of muscle problems after sitting out a few games during Spring Training for a side injury. The redbirds are generally healthy going into the season, that can change quickly as we saw last night with catcher Jason la Rue. He has a strained right hamstring from running out a grounder in the 7th. Just ten days ago he had bruised left hand. Orthopedic surgeon Dr. Rick Lehman with the U.S. Center for Sports Medicine talks about sports injuries.