Before wrapping up a three-game series against the Astros at Fenway Park on Thursday, the Red Sox recalled right-hander Brandon Brennan from Triple-A Worcester.
In a corresponding move, fellow righty Phillips Valdez was optioned down to the WooSox, the team announced Thursday evening.
The move to swap relievers comes at a time when the Red Sox bullpen has been heavily used as of late, and with Hirokazu Sawamuara dealing with right hip soreness, Boston opted to bring up a fresh arm in the form of Brennan.
Brennan, who turns 30 next month, was originally claimed off waivers by the Sox from the Mariners in early May, shortly after he was designated for assignment by Seattle.
While he was optioned to Worcester as soon as he was claimed by Boston, Brennan has gotten his 2021 season off to a solid start with the WooSox.
In eight appearances out of Worcester’s bullpen to this point, the 6-foot-4 righty has posted a 2.16 ERA and 3.65 xFIP to go along with 11 strikeouts and five walks over 8 1/3 innings of relief thus far.
Prior to joining the Red Sox organization this spring, Brennan spent parts of two big-league seasons with the Mariners in 2019 and 2020. He put up a 4.45 ERA, a 4.73 FIP, and a 54:29 strikeout-to-walk ratio in 49 total outings spanning 54 2/3 innings of work.
The California native operates with a four-pitch mix that consists of a changeup, a sinker, a four-seam fastball, and a slider, per Baseball Savant. He is known for his ability to induce swinging strikes.
A former fourth-round draft pick of the White Sox in 2012, Brennan was selected by the Mariners in the major-league phase of the 2018 Rule 5 Draft, so he will join fellow Rule 5 draftee Garrett Whitlock in the Red Sox bullpen for the time being.
Valdez, meanwhile, was optioned to Triple-A Worcester after being used three times in the last four days.
On the 2021 season as a whole, the 29-year-old owns an ERA of 4.24 and FIP of 3.96 over 20 relief appearances (23 1/3 innings), though he has seen his numbers inflate as of late on account of the fact he has allowed at least one earned run in four of his last six outings.
(Picture of Phillips Valdez: Billie Weiss/Boston Red Sox/Getty Images)