S2015:E3 60 Minutes Sports

Armen Keteyian gets the inside story on pro hockey fights -- and the pending class-action lawsuit against the NHL -- from the some of the ice's most famous "enforcers." Plus, Sharyn Alfonsi profiles one of the biggest talents ever to swim for the U.S: Missy Franklin, whose ambition is to win more Olympic medals than any woman ever; 'Sports Illustrated' columnist John Wertheim on underdogs; and Jeff Glor investigates why so many major league pitchers are having arm surgery at younger and younger ages