Gallegos blew the save after allowing two runs (one earned) on one hit without recording an out during Thursday's 7-6 loss to the Mets.
Gallegos came on in the bottom of the 10th with the designated runner on second and a one-run lead, and he promptly gave up a walk-off, two-run homer to the first batter he faced, Pete Alonso. It was the relievers' second blown save of the campaign in just nine opportunities. Ryan Helsley, who has allowed only one unearned run with a 24:2 K:BB over 13.2 innings, could begin to see more save chances if Gallegos continues to falter.