The center fielder was pulled mid-game with the injury.
Juan Lagares left the Mets' game against the Marlins after four innings this evening because of a hyperextended elbow. Though the injury wasn't apparent immediately, it seems Lagares hurt himself on an awkward play in center field in the top of the fourth inning.
Jarrod Saltalamacchia hit a ball in the air to center that mixed Lagares up, and the center fielder had it drop in front of him. But he picked it up quickly and fired a throw to second base to retire Garrett Jones, who had been on first base and failed to slide into second on the play.
In his second season in the big leagues, Lagares has hit .281/.321/.382 and played excellent defense in center field—both by the metrics and the eye test. Here's hoping his absence is brief, as watching him play in the outfield has been one of the better reasons to watch the Mets this year.