Red Sox reportedly fill out their starting rotation with free agent Garrett Richards

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The Red Sox appear to have locked in on a starting rotation.

According to ESPN.com's Jeff Passan, the Sox have agreed to a one-year, $10 million deal with starter Garrett Richards. Alex Speier adds that there is a team option for 2022.

The 31-year-old righty appeared in 14 regular season games for the Padres in 2020, starting 10 of them while compiling a 4.03 ERA. He also pitched in four postseason games, giving up two runs in 2 2/3 innings of relief.

Last season marked Richards' first action since undergoing Tommy John surgery in 2018 while a member of the Angels.

His best seasons came in 2014 and 2015 when the former first-rounder put up ERAs of 2.61 and 3.65, respectively, in a combined 58 starts.

Richards represented one of the hardest-throwing free agent starters available, with an average fastball of just more than 95 mph. His slider, however, is viewed as his most valuable weapon.

Besides Richards, the Red Sox' starting rotation consists of Eduardo Rodriguez, Nathan Eovaldi, Nick Pivetta, Tanner Houck and eventually Chris Sale (who is expected back from Tommy John surgery around May/June).

Other depth options for the rotation include recently-acquired Matt Andriese, Connor Seabold, Rule 5 pickup Garrett Whitlock and Chris Mazza.