NEW YORK -- Former New York Yankees closer Mariano Rivera told reporters Saturday morning that he planned on speaking with Devin Williams before he left Yankee Stadium, but that meeting never took place.

A Yankees spokesperson told The Athletic that Rivera injured his Achilles during the team's Old-Timers' Day game, which made its return for the first time since 2019. Team trainers checked Rivera before he left the stadium, but the severity of Rivera's injury is unknown. Roger Clemens told WFAN that he believed Rivera was in the hospital getting examined.

"We all thought it was a hamstring, but I think it's a little worse than that," Clemens said.

Rivera smoked a single off Andy Pettitte and ran to first base with no issues, but in the bottom half of the inning, Rivera was in center field when he fell to the ground during a Willie Randolph at-bat. He took a step before crumpling down again.

In 2012, Rivera tore his ACL in Kansas City while shagging fly balls during batting practice. That injury caused the 13-time All-Star to miss the rest of the 2012 season before he returned for a final run with the Yankees in 2013.

Rivera is the only player in MLB history to be unanimously inducted into the Baseball Hall of Fame.