Dominguez allowed three runs on two hits over 1.2 innings during Game 2 of Tuesday's doubleheader against the Nationals. He struck out one and walked three. Dominguez remained in the game after a scoreless eighth inning attempting to secure the save with a 6-3 lead, but instead gave up two runs on two hits and two walks before exiting the game with the bases loaded. Luis Garcia entered the game and walked Trea Turner to tie things up 6-6, meaning Dominguez actually earned a hold for the outing rather than blowing the save, since he wasn't pitching when the lead was relinquished. The 24-year-old set a season high with 43 pitches, and now has a 3.29 ERA, 0.96 WHIP and 67:19 K:BB across 52 total innings.
Dominguez pitched a scoreless ninth-inning to preserve a five-run lead Sunday against the Blue Jays, striking out two batters. Dominguez seems to have at least temporarily lost his hold on the closer's job, as he hasn't recorded a save since Aug. 16 while Pat Neshek has recorded a pair in that time frame. His demotion was seemingly well-deserved, as he had posted a 12.71 ERA and a 1.76 WHIP over his last seven appearances prior to Sunday. His excellent strikeout and walk numbers remained strong throughout that stretch, however, as he struck out eight while walking just one, and it may take just a few more appearances like the one he had Sunday for him to regain his manager's trust and move back into a high-leverage role.
Dominguez (1-4) blew his fourth save of the season in Wednesday's 8-7 loss to the Nationals, serving up a two-run walkoff home run to Ryan Zimmerman with two outs in the ninth inning. The right-hander seemed to have things well in hand, getting Bryce Harper and Anthony Rendon to fly out to begin the frame, but Juan Soto's double into the right-field corner opened the door for Zimmerman's heroics. Dominguez has now blown three of his last five save opportunities, giving up homers each time, and Phillies manager Gabe Kapler may have to start considering other ninth-inning options once again.
Dominguez picked up his 14th save of the year in the nightcap of Thursday's doubleheader against the Mets, recording the final two outs on a pair of strikeouts while allowing one hit. Dominguez was called upon with one out in the ninth inning and the tying run on deck in a four-run game. He allowed that tying run to come up to bat after giving up a single to Wilmer Flores, but he struck out Austin Jackson and Jose Bautista to close the game. It was a significant moment for the young reliever, who was able to shut the door after throwing 1.1 innings the day before despite struggling in similar situations for much of the year.
Dominguez tossed 1.1 scoreless innings Wednesday to pick up his 13th save of the season in a 7-4 win over the Red Sox. He wasn't exactly sharp, throwing only nine of 18 pitches for strikes, but Dominguez didn't allow any hard contact as he rebounded from blown saves in his last two opportunities. Despite his occasional stumbles, the rookie still has a 2.32 ERA and 54:13 K:BB in his first 42.2 big-league innings.