Edwin Diaz was hittable in the 10th, and the Mets’ offense did not do enough hitting all night in a series- and stretch-run-opening 4-3, extra-inning loss to the Giants in front of a sellout crowd of 42,777 at Citi Field on Friday.

Dom Smith beat his former team Friday night, smacking an RBI single in the 10th inning off Edwin Díaz to lift the San Francisco Giants to a 4-3 victory over the Mets at Citi Field.

Dominic Smith’s go-ahead RBI single against closer Edwin Diaz in the 10th proved to be the difference in the Mets’ 4-3 loss.