Legendary New York Yankees closer Mariano Rivera tore one of his Achilles tendons during the club's 77th Old-Timers' Day game on Saturday, his agent Fernando Cuza confirmed to The Athletic. Rivera will undergo surgery this upoming week.

The former Yankees closer loved shagging fly balls during his playing career. Even though it led to an injury that cost him most of the 2012 season, he did so at his own peril again.

A #Yankees spokesperson confirmed that Mariano Rivera hurt his Achilles during the Old-Timers'Day game, as Roger Clemens told Suzyn Waldman. Severity unclear. Rivera met with trainers, but the team didn't have any info beyond that.