Trevor McDonald

Trevor McDonald

25-Year-Old PitcherSP
San Francisco Giants AAA
2026 Fantasy Outlook
After a three-inning with San Francisco appearance to close the 2024 campaign, McDonald spent most of last season with Triple-A Sacramento before joining the Giants for the final two weeks. With the River Cats, his command and control slipped from prior levels, and he was hit particularly hard. McDonald leans heavily on a sinker and slider, while occasionally mixing in a four-seamer and changeup. He appeared three times for the Giants, starting twice and totaling 15 innings with 14 strikeouts and two walks. San Francisco has several options for the back end of the rotation, which could push McDonald toward a bullpen role. To secure a spot, he'll need to regain his command and control. He's best suited as a swingman, where he could be effective when starting at home. Read Past Outlooks
RANKS
Rest of Season
From Preseason
#394
ADP
Signed a one-year contract with the Giants in March of 2026.
Loses race for bullpen spot
PSan Francisco Giants  AAA
March 24, 2026
The Giants optioned McDonald to Triple-A Sacramento on Tuesday, Shayna Rubin of the San Francisco Chronicle reports.
Analysis
McDonald got off to a fast start this spring and looked to have a real chance at making the Giants' Opening Day bullpen as a long reliever. However, after finishing the Cactus League with a 6.94 ERA and 1.20 WHIP over 11.2 frames, he'll head to Sacramento to get back on track. The 25-year-old righty has looked good during his limited MLB opportunities (1.50 ERA, 0.89 WHIP through 18 IP), so the Giants may still be willing to add him to their rotation if injuries begin to arise among their starters.
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Pitching Stats
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2025 MLB Game Log
2025
2024
2025 MLB Game Log
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2024 MLB Game Log
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Left/Right Pitching Splits
Since 2024
 
 
-51%
BAA vs RHP
2026
No Stats
2025
 
 
-50%
BAA vs RHP
2024
No Stats
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .292 28 4 3 7 0 0 0
Since 2024vs Right .143 42 11 0 6 1 0 1
2026vs Left 0 0 0 0 0 0 0 0
2026vs Right 0 0 0 0 0 0 0 0
2025vs Left .333 24 4 2 7 0 0 0
2025vs Right .167 36 10 0 6 1 0 1
2024vs Left .000 4 0 1 0 0 0 0
2024vs Right .000 6 1 0 0 0 0 0
Home/Away Pitching Splits
Since 2024
 
 
-100%
ERA at Home
2026
No Stats
2025
 
 
-100%
ERA at Home
2024
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 0.00 0.50 10.0 1 0 0 9.9 0.9 0.9
Since 2024Away 3.38 1.38 8.0 0 0 0 4.5 2.3 0.0
2026Home 0 0 0 0 0 0 0 0 0
2026Away 0 0 0 0 0 0 0 0 0
2025Home 0.00 0.57 7.0 1 0 0 12.9 0.0 1.3
2025Away 3.38 1.38 8.0 0 0 0 4.5 2.3 0.0
2024Home 0.00 0.33 3.0 0 0 0 3.0 3.0 0.0
2024Away 0 0 0 0 0 0 0 0 0
Minor League Left/Right Pitching Splits (AAA)
Since 2024
 
 
-4%
BAA vs RHP
2026
No Stats
2025
 
 
-2%
BAA vs LHP
2024
 
 
-22%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .268 362 75 36 84 13 4 15
Since 2024vs Right .257 469 105 40 106 23 6 11
2026vs Left 0 0 0 0 0 0 0 0
2026vs Right 0 0 0 0 0 0 0 0
2025vs Left .260 282 59 30 63 9 2 12
2025vs Right .266 347 85 32 81 18 4 10
2024vs Left .296 80 16 6 21 4 2 3
2024vs Right .231 122 20 8 25 5 2 1
Stat Review
How does Trevor McDonald compare to other starting pitchers?
This section compares his stats with all starting pitcher seasons from the previous three seasons (minimum 120 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.

* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 120 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
  • BABIP
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
K/BB
7.00
 
K/9
8.4
 
BB/9
1.2
 
HR/9
0.6
 
Fastball
93.1 mph
 
ERA
1.80
 
WHIP
1.00
 
BABIP
.298
 
GB/FB
2.44
 
Left On Base
66.2%
 
Exit Velocity
82.3 mph
 
Barrels/BBE
2.8%
 
Spin Rate
2509 rpm
 
Balls Hit 95+ MPH
29.6%
 
Swinging Strike
14.6%
 
Prospect Rankings History
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Trevor McDonald See More
Recent RotoWire Articles Featuring Trevor McDonald See More
2024 Fantasy Outlook
McDonald is a nice sleeper prospect for dynasty leagues, as he has excellent control and could potentially get to pitch half his games in the pitcher-friendly park in San Francisco. In his age-22 season, McDonald logged a 1.33 ERA, 0.93 WHIP and 51 strikeouts in 47.1 innings across 14 appearances in the lower levels of the minors. He averaged 94 mph with his two-seam fastball last year (touching 98 mph) and had a groundball rate north of 70 percent. McDonald also sports a plus curveball, while mixing in a four-seamer and a slider.
More Fantasy News
In mix for bullpen spot
PSan Francisco Giants  AAA
March 10, 2026
McDonald has allowed two hits and a walk while striking out seven across six scoreless innings in three Cactus League appearances, and he is making a strong case to open the 2026 campaign in the Giants' bullpen, Maria Guardado of MLB.com reports.
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Fans 10 in first career win
PSan Francisco Giants  AAA
September 26, 2025
McDonald (1-0) allowed three runs on five hits and struck out 10 without walking a batter over seven innings to earn the win over the Rockies on Friday.
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Picking up another start
PSan Francisco Giants  AAA
September 26, 2025
McDonald is slated to start Friday's game against the Rockies in San Francisco.
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Shows well in first start
PSan Francisco Giants  AAA
September 21, 2025
McDonald allowed one run on six hits and a walk while striking out three over six-plus innings in a no-decision Sunday versus the Dodgers.
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Drawing first MLB start Sunday
PSan Francisco Giants  AAA
September 20, 2025
McDonald will start Sunday's game against the Dodgers in Los Angeles, Justice delos Santos of The San Jose Mercury Newsreports.
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