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Yankees legend Mariano Rivera, 55, tore his Achilles tendon during Saturday's Old-Timers' Day game. The injury occurred while fielding a fly ball after he had singled off former teammate Andy Pettitte. Rivera, baseball's all-time saves leader, will undergo surgery within a week. The incident overshadowed the game's celebration of the 2000 World Series champions and marked a somber end to an otherwise celebratory day for the Yankees.

Prepared by Emily Rhodes and reviewed by editorial team.