The Red Sox optioned pitchers Colten Brewer, Chris Mazza, Matt Hall, and Jeffrey Springs to minor league rosters Thursday.

The club also officially added infielder Yairo Munoz as a nonroster invitee.

The Sox claimed Mazza off waivers in December after he was designated for assignment by the New York Mets. Mazza debuted in the majors in 2019 and posted a 5.51 ERA in 16⅓ innings of relief work.

When David Price was traded to the Dodgers this year, there was some talk about Mazza possibly being a starter. However, that idea didn’t gain much momentum as spring camp progressed.

Brewer might be a surprising move to some. After a down 2019 season, he was a candidate for an opener position, and he made an impression during spring training (2.16 ERA in 8⅓ innings).


Nonetheless, Brewer still has an option left and still could be a part of the equation once the season gets under way. In this age of depth, this move might give chief baseball officer Chaim Bloom more flexibility to add another starter.

Julian can be reached at julian,mcwiliams@globe.com. Follow him on Twitter @byJulianMack