American professional football player Leonard Marshall, defensive lineman for the New York Giants (kneeling), rejoices after hitting San Francisco 49ers quarterback Joe Montana (lying on ground) at the 1990 - 1991 NFC Championship Game at Candlestick Park (now Monster Park), San Francisco, California, January 20, 1991. Montana left the game due to injuries he suffered from the blind-side sack. The Giants went on to defeat the 49ers 15 to 13, the victory qualifying them for Superbowl XXV. (Photo by Robert Riger/Getty Images)