"The Enforcers" looks at enforcers in ice hockey and examines the serious toll the job takes on the body of an athlete. "Time for a Change Up" examines a more scientific and analytical approach to pitching in baseball. "From the Press Box" Jon Wertheim talks about underdogs in the NCAA tournament. "Missy" profiles Olympic swimmer Missy Franklin who now swims in college. "Bob Simon" looks at some of the stories of the late correspondent.