Mets shortstop Alex Cora left Sunday’s game in the third inning with an injured right thumb.

Alex Cora had to leave the game in the third inning after he injured his right thumb sliding headfirst into second base in the first inning.

There was no immediate word as to the severity of the injury.

Cora, 33, injured his thumb sliding into second base on a first-inning double. He remained in the game for another two innings, but did not join his teammates on the field for the bottom of the third.

Fernando Tatis replaced him at shortstop for only his fourth career game at the position and his first since 1998.

The Mets were already using Cora as an injury replacement for Jose Reyes, who has missed the past four games with tendinitis in his right calf.

It’s still uncertain Reyes will need to recover, but Reyes said he would play tomorrow when asked.