Red Sox Recall Reliever Before Starting Key Astros Series

The Boston Red Sox made another arm swap within the system before beginning a consequential three-game series in Houston on Monday against the Astros.

Greg Weissert is back in the big leagues with the Red Sox, who sent Bailey Horn back to Triple-A Worcester in a corresponding move, per a team release.

Weissert last pitched for Boston on July 28 against the New York Yankees before being demoted. The right-hander, who the Red Sox acquired from the Yankees last offseason, struggled as the summer rolled around after posting a 5.73 ERA in June and a 6.17 ERA in July.

Upon the move to Worcester, Weissert held a 1.50 ERA in four Triple-A outings prior to Monday's recall. He joins the Red Sox bullpen at a critical time as Boston trails the Kansas City Royals by 3 1/2 games for the final playoff spot in the American League.

Boston faced the Astros back at Fenway Park earlier this month with Houston taking the weekend series in a three-game sweep.

The Red Sox and Astros begin the three-game series at Minute Maid Park on Monday night with first pitch set for 8:10 p.m. ET. You can catch the game, plus an hour of pregame coverage, on NESN.