Red Sox claim reliever Brandon Brennan off waivers from Mariners, place Ryan Brasier on 60-day injured list

The Red Sox have claimed right-hander Brandon Brennan off waivers from the Seattle Mariners and optioned him to Triple-A Worcester, the team announced Monday afternoon.

In order to make room for Brennan on the 40-man roster, fellow right-hander Ryan Brasier was placed on the 60-day injured list.

Brennan, 29, was designated for assignment by the Mariners last Wednesday after starting the season at the team’s alternate training site in Tacoma.

In two big-league seasons with Seattle (2019-2020), the California native posted a 4.45 ERA, a 4.73 FIP, and a 54:29 strikeout-to-walk ratio over 49 total relief appearances spanning 54 2/3 innings of work.

He was however limited to just five outings last year on account of suffering a left oblique strain in late July.

A former fourth-round draft pick of the Chicago White Sox out of Orange Coast College, Brennan originally joined the Mariners via the 2018 Rule 5 Draft.

Per Baseball Savant, the 6-foot-4, 207 pound hurler works with a changeup, a sinker, a four-seam fastball, and a slider.

Among the 198 major-league relievers who compiled at least 50 innings pitched over the last two seasons, Brennan ranked 26th in terms of swinging strike percentage (15.3%), per FanGraphs.

Now that he has been added to Boston’s 40-man roster, Brennan — who has three minor-league options remaining — will look to provide right-handed bullpen depth for the Sox in Worcester. He will join the likes of Eduard Bazardo and Colten Brewer as WooSox relievers currently on the Sox’ 40-man.

Brasier, meanwhile, opened the 2021 season on the 10-day injured list for the Red Sox, so transferring him to the 60-day IL is more of a formality than anything.

As noted by MassLive.com’s Chris Cotillo, the 33-year-old “has dealt with two significant injured since the end of last season, as he fractured his pinky finger during an off-season workout and then strained his calf during a ‘B’ game during the last week of spring training.”

The earliest Brasier can be activated from the injured list now is May 28 after the start of his initial IL stint was backdated to March 29.

(Picture of Brandon Brennan: Abbie Parr/Getty Images)