Bass pitched a perfect ninth inning with one strikeout to earn the save in Saturday's 2-1 win over the Red Sox.
Bass whiffed Christian Vazquez before getting flyouts from Kevin Pillar and Jackie Bradley to finish the inning on a mere eight pitches. The 32-year-old Bass has yet to allow a run in 6.1 innings this year, with just two hits and a walk against him so far. Expect the right-hander to continue in the closer role while Ken Giles (forearm) is out.