Mariano Rivera, former Yankees closer, tears Achilles tendon during Old-Timers' Day game.

Former New York Yankees closer Mariano Rivera, a Hall of Famer and the career leader in saves, tore his Achilles tendon during the Old-Timers' Day game on Saturday. The 55-year-old will undergo surgery within a week. Rivera, who helped the Yankees win five World Series titles, was participating in his second Old-Timers' Day game, which celebrated the 25th anniversary of the team's 2000 championship.