The Mets recalled RHP Hansel Robles from the minors and optioned RHP Chasen Bradford to Triple-A Las Vegas on Sunday, the team announced.
Robles, 26, went 4-1 with a 6.23 ERA in 21 games in the majors and 0-1 with a 5.79 ERA in 18 minor-league appearances since he was optioned in late May.
In his last eight outings with the 51s, Robles had allowed three earned runs in 11 innings.
Bradford gave up five runs and nine hits in six innings of work across five outings in the majors this season. On Sunday, he allowed two runs and three hits in two innings in a 13-4 loss to the Colorado Rockies.
He went 1-1 with a 4.26 ERA and nine saves in 13 chances in 29 games with Las Vegas this year.