Kyle Harrison| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2026 proj | 4 | 4 | 0 | 1 | 77.0 | 70 | 30 | 79 | 36 | 4.21 | 1.299 | 12.8 |
| 2026 | 0 | 0 | 0 | 0 | 5.0 | 4 | 1 | 8 | 1 | 1.80 | 1.000 | 44.1 |
| 2025 | 1 | 1 | 0 | 1 | 35.7 | 35 | 14 | 38 | 16 | 4.04 | 1.374 | 6.7 |
| 2024 | 7 | 7 | 0 | 0 | 124.3 | 125 | 42 | 118 | 63 | 4.56 | 1.343 | 15.6 |
| 2023 | 1 | 1 | 0 | 0 | 34.7 | 29 | 11 | 35 | 16 | 4.15 | 1.154 | 6.7 |
| Date | News |
| 3/19/26 | Brewers LHP Harrison exits start with blister. Kyle Harrison, who has been competing for a spot in Milwaukee's starting rotation, left Wednesday because of a blister on his left index finger. Source: https://www.espn.com/mlb/story/_/id/48243482/brewe... |
| 3/18/26 | Brewers LHP Harrison exits start with blister. Kyle Harrison, who has been competing for a spot in Milwaukee's starting rotation, left Wednesday because of a blister on his left index finger. Source: https://www.espn.com/mlb/story/_/id/48243482/brewe... |
| 9/09/25 | Insider: Rehabbing Pitcher 'Could Be In Play' For Red Sox Bullpen. With the Boston Red Sox reportedly calling up starting pitchers Connelly Early and Kyle Harrison from Triple-A Worcester on Tuesday, one insider is eyeing a potential return to the big leagues for one reliever as well. Alex Speier of The Boston Globe posted on Bluesky on Tuesday afternoon, reporting that the WooSox were adding pitchers Luis Guerrero, Jack Anderson and Noah Song from Double-A. Source: https://nesn.com/2025/09/insider-rehabbing-pitcher... |
| 9/03/25 | 'I’m disappointed that I couldn’t be out there': Kyle Harrison returns to Worcester after near promotion to Boston Red Sox. From possibly making his debut for the Red Sox at Fenway Park, to returning to Triple-A Worcester, it was a whirlwind two days for Kyle Harrison. Source: https://sports.yahoo.com/article/m-disappointed-co... |
| 9/02/25 | Red Sox Reportedly Calling Up Ex-Giants Pitcher From Rafael Devers Trade. Nearly three months after the Boston Red Sox acquired Kyle Harrison from the San Francisco Giants, his Red Sox debut now appears imminent. Harrison, who was acquired from the Giants in the Rafael Devers trade on June 15, was assigned to Triple-A Worcester following the trade. According to multiple sources, Harrison appears headed for Boston. Source: https://nesn.com/2025/09/red-sox-reportedly-callin... |
| 9/01/25 | Will Red Sox promote Kyle Harrison (Rafael Devers trade) to start Wednesday?. Manager Alex Cora wouldn't say whether Kyle Harrison, the lefty who the Red Sox acquired from the Giants in the Rafael Devers trade, is the leading candidate to start Wednesday vs. Cleveland. “There's a lot of guys that we're considering,” Cora said Monday before Boston's three-game series opener against the Guardians. The Red Sox need a starter for Wednesday, preferring to give rookie Payton Tolle extra rest after he made his MLB debut Friday. Tolle never pitched on regular rest in the minors this season. Source: https://www.masslive.com/redsox/2025/09/will-red-s... |
| 8/27/25 | Red Sox Rumors: Payton Tolle Or Kyle Harrison? Here's Big Hint. Inquiring minds want to know: Who will be the starting pitcher for the Boston Red Sox on Saturday against the Baltimore Orioles? At this point, Kyle Harrison and Payton Tolle are the front-runners to fill the open spot in the rotation. While the Red Sox are saying little about who it could be, an interesting development might have tipped the club's hand. Harrison started for Triple-A Worcester Tuesday, but left the game after just three innings. Source: https://nesn.com/2025/08/red-sox-rumors-payton-tol... |
| 8/24/25 | With Walker Buehler in bullpen, Red Sox scratch Triple-A lefty ahead of potential team debut. Kyle Harrison didn't make his scheduled start for the WooSox on Sunday, suggesting he's very much in play to make his Red Sox debut Monday night in Baltimore. Harrison was scheduled to pitch at Polar Park in Worcester's series finale against Jacksonville but it was Chris Murphy who got the start Sunday. Harrison is on standby with righty Richard Fitts serving as the other candidate to pitch. The Red Sox are likely waiting to see whether or not they need to use Fitts in a long relief role in Sunday night's series finale at Yankee Stadium. Source: https://www.masslive.com/redsox/2025/08/with-walke... |
| 8/14/25 | Red Sox's Kyle Harrison Impresses With WooSox: Call-up Coming?. Kyle Harrison stated his case for joining the Boston Red Sox rotation by throwing another gem Wednesday for Triple-A Worcester. Of the 94 pitches Harrison threw, only 52 were strikes. Before the 24-year-old took the mound Wednesday, Red Sox manager Alex Cora was asked about the pitcher's development. Source: https://nesn.com/2025/08/red-soxs-kyle-harrison-im... |
| 8/13/25 | Kyle Harrison making progress as depth rotation option for Red Sox. Kyle Harrison, the left-hander acquired in the Rafael Devers trade is on quite a run at the Triple-A level. Source: https://sports.yahoo.com/article/kyle-harrison-mak... |
| 8/08/25 | Minor Lines 8/7: Kyle Harrison throws a gem. And Greenville 1B Albert Feliz goes deep twice, as both the Drive and Salem played doubleheaders on Thursday. Source: https://sports.yahoo.com/article/minor-lines-8-7-k... |
| 8/07/25 | Red Sox Pitcher From Rafael Devers Trade Dominates In Triple-A. It's been nearly two months since Kyle Harrison was traded to the Boston Red Sox as a part of the Rafael Devers blockbuster. The southpaw hasn't yet made his debut in Boston, making each of his eight starts this summer with the Triple-A Worcester Red Sox. Harrison was on the bump on Thursday afternoon against the Buffalo Bisons and had arguably his best outing since being acquired by the Red Sox. “Kyle Harrison's day is done. Final line: 5.0 IP, 2 H, 0 ER, 3 BB, 7 K 99 pitches / 61 strikes 11 swinging strikes,” the SoxProspects.com Bluesky account posted. “48% 4-Seam Fastballs (7 whiffs) 27% Slurves (1 whiff) 17% Sliders (3 whiffs) 7% Changeups.” Kyle Harrison's day is done. Final line:5.0 IP, Source: https://nesn.com/2025/08/red-sox-pitcher-from-rafa... |
| 8/05/25 | Giants' Rafael Devers Trade Backfires as Season Spirals and Red Sox Surge. When the San Francisco Giants pulled off a midseason stunner by sending Kyle Harrison and Jordan Hicks to the Boston Red Sox for Rafael Devers, the move was hailed as a franchise-altering swing for the fences. The Giants, riding high at 41-31, weren't just trying to keep pace in a loaded National League West — they were making a play to win it all. Since acquiring Devers, the Giants have gone from playoff hopefuls to trade deadline sellers, watching their postseason dreams crumble with a 15-26 skid that flipped their season on its head. Source: https://www.si.com/mlb/giants/san-francisco-giants... |
| 7/30/25 | Red Sox ‘have seen flashes’ from starter acquired in Rafael Devers trade. Kyle Harrison — the 23-year-old lefty who the Red Sox acquired in the Rafael Devers trade — is part of the thin starting depth group at Triple-A Worcester. "We've seen flashes." Source: https://sports.yahoo.com/article/red-sox-seen-flas... |
| 7/24/25 | [Sports Illustrated] - Week 18 MLB Prospect Watch: Kyle Harrison Rises, Andrew Painter & Bubba Chandler Fade. Week 18 features several intriguing starting pitcher prospects, including Kyle Harrison and JR Ritchie, while Andrew Painter and Bubba Chandler struggle. Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 7/14/25 | Minor Lines 7/13: Kyle Harrison throws shutout*. *You can’t call it clickbait if I admit here that he only made it to the fourth inning, right? Source: https://sports.yahoo.com/article/minor-lines-7-13-... |
| 6/27/25 | Giants Might Have New Pressing Need To Address Ahead of MLB Trade Deadline. The San Francisco Giants already made what will likely be the biggest trade of the 2025 MLB regular season. In exchange for left-handed pitcher Kyle Harrison, right-handed pitcher Jordan Hicks, outfield prospect James Tibbs III and right-handed pitching prospect Jose Bello, the Giants addressed their most pressing need. Source: https://www.si.com/mlb/giants/san-francisco-giants... |
| 6/27/25 | Red Sox Got Glimpse Into Future Despite Day Off. The Boston Red Sox may not have had a game on Thursday, but it was a good day. Boston got a glimpse into the future. The Triple-A Worcester Red Sox had a game and newly acquired starter Kyle Harrison took the mound for his first appearance in the Boston organization after being acquired in the Rafael Devers blockbuster trade. On top of this, Kristian Campbell also took the field at first base for Worcester. Source: https://www.si.com/mlb/red-sox/boston-red-sox-news... |
| 6/27/25 | How Did Red Sox's Kyle Harrison Perform In First Outing Since Rafael Devers Trade?. Life must have been a whirlwind for new Boston Red Sox pitcher Kyle Harrison since arriving in the Jun. 15 trade with the San Francisco Giants for Rafael Devers. Harrison was a big-time prospect in San Francisco but after his up-and-down rookie season in 2024, he split his time between Triple-A and the majors earlier this season. Harrison threw four innings on Wednesday night for the Triple-A Worcester Red Sox in his organizational debut. Source: https://www.si.com/mlb/red-sox/boston-red-sox-news... |
| 6/23/25 | New Triple-A Worcester pitcher Kyle Harrison excited for fresh start with the Boston Red Sox. For the first time since he was traded to the Boston Red Sox, and optioned to Triple-A Worcester, Kyle Harrison tossed a baseball while wearing a Worcester uniform. Source: https://sports.yahoo.com/article/triple-worcester-... |
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