Kyle Harrison

Kyle Harrison

23-Year-Old PitcherSP
San Francisco Giants AAA
2025 Fantasy Outlook
During his days in the minors when he became a top prospect, Harrison posted an ugly 12.3 percent walk rate but also a whopping 37.4 percent strikeout rate. Both of those numbers have come way down in the majors, with the lefty issuing walks at just a 7.8 percent clip but also fanning batters at a pedestrian 22.5 percent rate. Harrison's velocity also dipped in 2024 across the board and was down even more from August on when he posted a 7.76 ERA over six starts before he ended the season on the injured list with shoulder inflammation. Because it gets so much horizontal movement after he dropped his arm slot, Harrison's four-seamer still played well in spite of the lesser velocity, with the pitch earning a plus-seven Run Value. That said, the profile on the whole doesn't look as exciting as it did a year ago. Read Past Outlooks
RANKS
Rest of Season
From Preseason
#376
ADP
$Signed a one-year contract with the Giants in March of 2024.
Loses out on rotation spot
PSan Francisco Giants  AAA
March 22, 2025
The Giants optioned Harrison to Triple-A Sacramento on Saturday, Shayna Rubin of the San Francisco Chronicle reports.
ANALYSIS
Harrison was among the players vying for the final spot in the big-league rotation, but he didn't do much in the Cactus League to help his case, allowing eight earned runs in just 6.2 innings. He'll be joined in Sacramento's rotation by Keaton Winn, leaving Hayden Birdsong and Landen Roupp as the remaining options for San Francisco.
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Pitching Stats
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2024
2023
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2023 MLB Game Log
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Left/Right Pitching Splits
Since 2023
 
 
-12%
BAA vs RHP
2025
No Stats
2024
 
 
-1%
BAA vs LHP
2023
 
 
-46%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .280 150 31 11 37 5 1 6
Since 2023vs Right .246 529 122 42 117 25 1 20
2025vs Left 0 0 0 0 0 0 0 0
2025vs Right 0 0 0 0 0 0 0 0
2024vs Left .260 108 29 6 25 3 1 3
2024vs Right .263 424 89 36 100 22 0 15
2023vs Left .333 42 2 5 12 2 0 3
2023vs Right .179 105 33 6 17 3 1 5
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Home/Away Pitching Splits
Since 2023
 
 
-28%
ERA at Home
2025
No Stats
2024
 
 
-17%
ERA at Home
2023
 
 
-58%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 3.78 1.24 83.1 5 2 0 9.5 2.6 0.9
Since 2023Away 5.23 1.37 75.2 3 6 0 7.7 3.4 2.1
2025Home 0 0 0 0 0 0 0 0 0
2025Away 0 0 0 0 0 0 0 0 0
2024Home 4.14 1.29 63.0 4 2 0 9.3 2.4 0.9
2024Away 4.99 1.40 61.1 3 5 0 7.8 3.7 1.8
2023Home 2.66 1.08 20.1 1 0 0 10.2 3.1 0.9
2023Away 6.28 1.26 14.1 0 1 0 7.5 2.5 3.8
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Prospect Rankings History
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Recent RotoWire Articles Featuring Kyle Harrison See More
Spring Training Job Battles: National League Update
5 days ago
Much has been decided in the National League over the last few days, including the Giants' fifth starter job, which was won by Landen Roupp.
NL FAAB Factor: Waiver Pickups of the Week
6 days ago
Jan Levine has a slightly smaller rundown of NL options than last week to get you prepared for the North American start to the regular season.
MLB FAAB Factor: The Calm Before the Storm
9 days ago
This week's FAAB includes pitcher Hayden Birdsong, who looks likely to end up as the Giants' SP5.
RotoWire Staff Picks: Pitcher Sleepers
11 days ago
The RotoWire staff shares their favorite sleeper pitchers, including young Giants right-hander Hayden Birdsong.
NL FAAB Factor: Waiver Pickups of the Week
13 days ago
Jan Levine kicks off the column for 2025 and examines all the NL positional battles.
Past Fantasy Outlooks
2024
2023
2022
Harrison walked three or more batters in 11 of his 20 starts at Triple-A, where automated balls and strikes may have increased walk rates relative to when humans are calling the game. He walked at least one batter but no more than two batters in all seven of his big-league starts, which lends credence to the theory that he may have less of a control issue when the human element is involved. Harrison always missed bats at an elite clip in the minors, with strikeout rates north of 35 percent at every stop. However his propensity to walk batters has held him back at times. The gap between his walk rate at Triple-A (16.3 percent) and the big leagues (7.5 percent) is essentially the difference between a pitcher destined for relief and a pitcher who comfortably projects as a starter. The 6-foot-2 southpaw was the third-youngest pitcher to make five-plus starts in the majors (only Eury Perez and AJ Smith-Shawver were younger), so it's fair to expect further skill development in the coming years for Harrison, who won't turn 23 until August. He is a flyball pitcher (26.8 GB% in the big leagues), but he has a good home park for that approach, as Oracle Park has the third-lowest home run park factor, per Baseball Savant's 3-year rolling average. He should make the rotation out of spring training, but a hamstring injury limited him to 102.1 innings, so the Giants may cap him at around 150 innings in the regular season.
Harrison isn't a perfect pitching prospect, but he is as good as they come with regards to missing bats. The 21-year-old southpaw struck out 186 in 113 innings across 25 starts between High-A and Double-A, with the bulk of his work coming at Double-A. He has a standard three-pitch mix (fastball/slider/changeup) and can get whiffs on any of his pitches in any count if he executes. Harrison had an 11.2 BB% at Double-A, but he cut down on the walks as the summer went on, and most evaluators expect him to stick as a starting pitcher. He is a flyball pitcher (35.6 GB%, 11 HR allowed at Double-A), so assuming his command and control are never elite, he will likely fail to log ace-level ratios, even if he is one of the game's top strikeout arms. While Harrison is not on the 40-man roster, he is clearly the team's best young pitcher, so a 2023 MLB debut is in the cards if he earns it.
Harrison could be a frontline starter if the rest of his development goes smoothly. We shouldn't count on that happening, but his talent and upside were on full display last year. The 20-year-old southpaw struck out 157 over 98.2 innings at Low-A, but his 1.40 WHIP on the year was obviously a red flag. That said, he closed the year on a high note, logging an 0.97 ERA, 0.92 WHIP and 61:13 K:BB in 37 innings over his final eight starts. He can already touch 98 mph with his four-seam fastball, and his slider and changeup might be 70-grade offerings in time. Both offspeed pitches got whiffs at over a 40% clip last season. If his late-season control gains hold and he can stay healthy, Harrison should cruise through the minors and may eventually pitch atop the Giants' rotation.
More Fantasy News
Weight, velo returning after virus
PSan Francisco Giants  AAA
March 17, 2025
Harrison showed better velocity in his last Cactus League appearance Sunday versus the Athletics, sitting at 93-to-94 mph and touching 95 mph several times, Alex Pavlovic of NBC Sports Bay Area reports.
ANALYSIS
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May not make rotation
PSan Francisco Giants  AAA
March 7, 2025
Harrison has fallen behind Landen Roupp this spring in the competition for the Giants' fifth-starter role, Andrew Baggarly of The Athletic reports. Harrison has given up five runs in 3.2 innings this spring with a 5:1 K:BB.
ANALYSIS
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First spring appearance Friday
PSan Francisco Giants  AAA
February 25, 2025
Harrison is expected to pitch in Friday's game against the Brewers following starter Logan Webb, Shayna Rubin of the San Francisco Chronicle reports.
ANALYSIS
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Velocity back this spring
PSan Francisco Giants  AAA
February 12, 2025
Harrison said Wednesday that he's rediscovered his velocity this spring after fixing issues with his delivery, Shayna Rubin of the San Francisco Chronicle reports.
ANALYSIS
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Competing for fifth rotation spot
PSan Francisco Giants  AAA
February 12, 2025
Harrison and Hayden Birdsong will be among the candidates competing for the fifth spot in the Giants' rotation, Susan Slusser of the San Francisco Chronicle reports.
ANALYSIS
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Latest Fantasy Rumors
Expected to debut as starter
PSan Francisco Giants  AAA
August 14, 2023
Giants president of baseball operations Farhan Zaidi told John Shea of the San Francisco Chronicle that Harrison will likely work as a starter once he arrives in the majors.
ANALYSIS
Harrison is still in build-up mode on the farm after missing much of July because of a Grade 2 right hamstring strain, and having him debut in relief could expedite the process. San Francisco badly needs rotation help, however, and the 22-year-old left-hander was knocking on the door to join the Giants as a starter just before the injury. He struck out four batters and allowed one unearned run over 3.1 innings in his most recent start for Triple-A Sacramento last Thursday, though it was only a 38-pitch appearance.
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