Alvarez stayed in the game after his double in the seventh inning. He did not come out to catch in the eighth inning of the Mets’ 7-3 win over the Mariners in the MLB Little League Classic. Mets manager Carlos Mendoza said Alvarez would return to New York for an MRI. “Right now, we don’t know what we’re dealing with,” Mendoza said.

Mark Vientos (four RBIs) hit a three-run HR in the fifth for the Mets, who had 14 hits and snapped a streak of five straight series losses.

Nolan McLean provided the struggling Mets a much-needed lift on Saturday as New York beat the Seattle Mariners 3-1.