Mariano Rivera, former New York Yankees closer, tore his Achilles tendon during the team's Old-Timers' Day game. The injury occurred while he was playing center field. Rivera will undergo surgery. The Old-Timers' Day game, revived after a hiatus, saw participation from several former players, despite concerns about injury. Rivera's injury highlights the risks involved in such events.

Prepared by Emily Rhodes and reviewed by editorial team.