The Boston Red Sox's bullpen has been in flux all season, as they've struggled to find the right mix of guys to secure leads and win games consistently.
After Friday night's loss to the New York Yankees due to a blown four-run lead, Boston was reportedly sending Zack Kelly down to Triple-A Worcester.
Now, The Boston Globe's Julian McWilliams reports that three more moves are coming.
The Red Sox are also optioning left-handed reliever Cam Booser to Triple-A and calling up left-handed pitchers Bailey Horn and Zach Penrod.
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Booser, 32, has been pretty solid for Boston this year, posting a 3.38 ERA and a 1.336 WHIP in 42 2/3 innings of work as a rookie. However, on Friday, he walked Juan Soto and gave up the game-winning grand slam to Aaron Judge.
Horn, 26, has been back and forth between Boston and Worcester this season after the Red Sox purchased his contract from the Chicago White Sox. In 15 appearances for Boston, he's posted a 6.35 ERA and a 1.588 WHIP in 17 innings.
Penrod, 27, is the most interesting move of the bunch, as he's currently No. 19 on SoxProspects rankings and the fifth-ranked pitcher. He posted a 2.80 ERA and 1.019 WHIP in seven starts at Double-A Portland this year. However, he's struggled in Triple-A, posting a 5.93 ERA and a 1.683 WHIP in 27 1/3 innings (15 appearances and five starts).
This will be an early audition for Penrod to earn a spot in the bullpen in 2025.
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