Harrison did not factor into the decision Friday against the Tigers, allowing three runs on seven hits and three walks over three innings. He struck out six.
The Red Sox southpaw struggled out the gate, as he escaped a scoreless first inning in which he conceded two walks and a hit. The Detroit lineup finally broke through against Harrison in the fourth, when the first five batters reached, plating three runs. Given that the 24-year-old tossed 65 pitches in this appearance, he likely wraps his regular season with a 4.04 ERA, 1.37 WHIP and 38:14 K:BB across 35.2 total frames with Boston and San Francisco.
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Red Sox's Kyle Harrison: In line for another start
Rotowire
Harrison is slated to start Friday's game against the Tigers in Boston.
Harrison stepped in as Boston's fifth starter last weekend at Tampa Bay and aced the test, striking out five while allowing one earned run on four hits and two walks across six innings in a no-decision. The southpaw will be rewarded with another turn through the rotation Friday, and another strong showing could help his case for earning a spot on Boston's postseason roster, should the Red Sox clinch a playoff spot.
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Red Sox's Kyle Harrison: Impressive in first Red Sox start
Rotowire
Harrison didn't factor into the decision Saturday against the Rays, allowing one run on four hits and two walks in six innings. He struck out five.
Saturday was Harrison's first start with the Red Sox since being acquired from San Francisco as part of the Rafael Devers trade, and it couldn't have gone much better. It was the southpaw's first quality start of the season, and he also generated 11 swinging strikes. Harrison has been effective when healthy in 2025, posting a 3.58 ERA, 1.19 WHIP and 32:11 K:BB over 32.2 innings, and Boston figures to give him one more look in its rotation during the regular season next weekend against Detroit.
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Red Sox's Kyle Harrison: In line to start Saturday
Rotowire
Red Sox manager Alex Cora said that Harrison will start Saturday's game against the Rays in Tampa, Jen McCaffrey of The Athletic reports.
Harrison will move into the rotation as a replacement for rookie lefty Payton Tolle, whom Cora said would be used in the bullpen for the remainder of the season. After getting called up from Triple-A Worcester last week, Harrison made his Red Sox debut out of the bullpen Sept. 10 in Sacramento, striking out two over three scoreless innings. Though he had been serving in a starting role for Worcester, Harrison hadn't covered five frames in an outing since Aug. 19, so the Red Sox may not be counting on the lefty working deep into his start Saturday.
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Red Sox's Kyle Harrison: Makes Boston debut
Rotowire
Harrison allowed three hits, hit a batter and struck out two over three scoreless relief innings in Wednesday's 5-4 loss to the Athletics.
Harrison pitched the final three innings in a piggyback outing that was started by Payton Tolle (two innings). Harrison isn't fully built up after a series of stops and starts over the last couple of weeks that included an ankle injury. He could be a factor later in September, as he unlikely has the same innings limits of rookies Tolle and Connelly Early.
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Red Sox's Kyle Harrison: Recalled to big leagues
Rotowire
The Red Sox recalled Harrison from Triple-A Worcester on Wednesday.
Harrison is a likely candidate to serve in a bulk-relief/piggyback role Wednesday against the Athletics, following starter Payton Tolle, who is expected to be in line for a light workload. The left-handed Harrison has posted a 3.75 ERA, 1.60 WHIP and 50:27 K:BB in 50.1 innings over 12 starts with Worcester since being acquired via trade in mid-June and will be making his Red Sox debut if he gets into Wednesday's game.
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Red Sox's Kyle Harrison: Could piggyback Tolle on Wednesday
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The Red Sox plan to recall Harrison from Triple-A Worcester ahead of Wednesday's game against the Athletics in Sacramento, Chris Cotillo of MassLive.com reports.
Though manager Alex Cora has confirmed that Payton Tolle will start Wednesday's contest, the rookie southpaw will be in line for an abbreviated appearance since he'll be pitching on less than five days' rest for the first time as a professional. According to Cotillo, Cora wouldn't reveal his plans for once Tolle exits the contest, but Harrison would make sense in a piggyback role. Since being acquired from the Giants in mid-June, Harrison has yet to make his Boston debut and has been working out of the rotation at Worcester, turning in a 3.75 ERA, 1.60 WHIP and 50:27 K:BB in 50.1 innings over 12 starts. He made a one-inning appearance Sunday and should be capable of covering multiple frames Wednesday in relief of Tolle.
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Red Sox's Kyle Harrison: Could be added to roster Wednesday
Rotowire
Harrison is headed to Sacramento to join the Red Sox and could be recalled from Triple-A Worcester prior to Wednesday's game against the Athletics, Tommy Cassell of the Worcester Telegram & Gazette reports.
The Red Sox have not yet announced a starter for Wednesday's game, though manager Alex Cora said that lefty Payton Tolle is expected to be used in some capacity. Harrison could also be in the mix, perhaps in a tandem start with Tolle. The left-handed Harrison pitched one inning with Triple-A Worcester on Sunday after overcoming an ankle injury, so he would be pitching on two days' rest Wednesday. Harrison holds a 3.75 ERA and 50:27 K:BB over 50.1 innings with Worcester since the Red Sox acquired him from the Giants on June 15.
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Red Sox's Kyle Harrison: Returns to action for Triple-A club
Rotowire
Harrison (ankle) made a one-inning start for Triple-A Worcester in the first game of a doubleheader Sunday, striking out two batters while allowing one earned run on two hits and one walk.
Harrison appeared to be a candidate to make a start or bulk-relief appearance with the Red Sox last week, but he sustained a minor ankle injury that may have played a part in him being bypassed for a promotion. The southpaw made enough progress in his recovery from the injury to pitch Sunday for Worcester, though he took on a much more limited workload than he typically handles during his starts.
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Red Sox's Kyle Harrison: Managing ankle injury
Rotowire
Triple-A Worcester manager Chad Tracy said Wednesday that Harrison is tending to an ankle injury, and the southpaw is without a clear timeline to resume pitching, Katie Morrison-O'Day of MassLive.com reports.
The southpaw had recently joined the Red Sox in Boston and appeared to be in consideration for a start Wednesday against the Guardians, but the big club will ultimately have lefty Brennan Bernardino serve as an opener in front of bulk reliever Dustin May in that contest. Harrison's ankle injury may have played a part in him being bypassed for the start with Boston, and it's yet to be determined whether the issue will result in him landing on Worcester's injured list.
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Red Sox's Kyle Harrison: Set to join big club
Rotowire
The Red Sox are expected to recall Harrison from Triple-A Worcester prior to Wednesday's game against the Guardians, Tommy Cassell of the Worcester Telegram & Gazette reports.
The Red Sox have yet to announce a starter for Wednesday, but Harrison is likely to slot into that spot. Acquired from the Giants in mid-June, Harrison has a 3.65 ERA and 48:26 K:BB over 49.1 innings covering 11 starts since joining Worcester, which includes a 2.00 ERA and 19:9 K:BB across his last 18 frames. Whether the lefty draws additional starts for Boston could depend on if the club wants to keep a six-man rotation for a stretch.
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Red Sox's Kyle Harrison: Won't be promoted after all
Rotowire
The Red Sox are not planning to recall Harrison from Triple-A Worcester prior to Wednesday's game versus the Guardians, Alex Speier of the Boston Globe reports.
Previous reports indicated that Harrison was headed to Boston and could start Wednesday's contest. However, the club has since announced that Brennan Bernardino will open the contest, with Dustin May slated for bulk relief. Harrison could still get an opportunity with the Red Sox at some point this month, but he'll remain with Worcester for now. The lefty has posted a 3.65 ERA and 48:26 K:BB over 49.1 innings covering 11 starts with Worcester after being dealt to Boston in the Rafael Devers trade.
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Red Sox's Kyle Harrison: Could make team debut Wednesday
Rotowire
Harrison was scratched ahead of his scheduled start with Triple-A Worcester and could be called up to start or pitch in bulk relief Wednesday against the Guardians in Boston, Chris Hatfield of SoxProspects.com reports.
Harrison had been a candidate to join the big-league rotation this past week when the Red Sox moved Walker Buehler to the bullpen and later released him, but the southpaw was bypassed for a promotion in favor of fellow Triple-A starter Payton Tolle. Though Tolle impressed in his MLB debut while striking out eight batters and allowing two earned runs over 5.1 innings in Friday's 4-2 loss to the Pirates, the Red Sox appear committed to keeping the 22-year-old on at least a five-day rest schedule between outings. As a result, Tolle doesn't appear to be in line to start Wednesday's series finale versus the Guardians, opening the door for Harrison or another pitcher to temporarily step into the rotation. The Red Sox could also opt to treat Wednesday's game as a bullpen day in lieu of calling up Harrison, who has submitted a 3.65 ERA and 1.57 WHIP in 49.1 innings with Worcester this season.
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Red Sox's Kyle Harrison: Candidate to start Monday
Rotowire
Harrison could be recalled from Triple-A Worcester to start Monday's series opener against the Orioles, Chris Cotillo of MassLive.com reports.
After the Red Sox moved Walker Buehler to the bullpen Friday, the club needs a starter for Monday's contest. The leading contenders to fill the void in the rotation would seem to be Harrison and Richard Fitts, the latter of whom was recalled from Triple-A on Thursday and was made available out of the bullpen. Fitts has gone unused in the first three games of the Red Sox's series with the Yankees, and if Boston stays away from him again Sunday, the right-hander would likely be the top candidate to take the hill Monday. Acquired from the Giants in the June 15 deal that sent Rafael Devers to San Francisco, Harrison has yet to make his Red Sox debut. The 24-year-old southpaw has thus far made 10 starts for Worcester, turning in a 3.69 ERA, 1.60 WHIP and 46:25 K:BB in 46.1 innings.
Red Sox's Kyle Harrison: Revamping repertoire in minors
Rotowire
Harrison is working on revamping his repertoire at Triple-A Worcester before joining their rotation, Tommy Cassell of the Worcester Telegram & Gazette reports.
Acquired from the Giants in the Rafael Devers trade, Harrison worked on some new pitches -- including a cutter and sinker -- during a live batting practice session this week. The lefty threw a four-seamer, slurve and changeup during his time in San Francisco, with Red Sox director of pitching Justin Williard calling the four-seamer a "unique fastball that's going to be his bread and butter." The Red Sox want Harrison to find some consistent secondary offerings to pair with the four-seamer, and senior director of player development Brian Abraham said "the returns have been really good so far" with the southpaw. Harrison figures to make at least a couple starts with Worcester as he works on his new offerings, but the plan seems to be to have him as part of Boston's rotation sooner rather than later.
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