Bryan Woo

Bryan Woo

26-Year-Old PitcherSP
Seattle Mariners
2026 Fantasy Outlook
In a season that much of Seattle's elite rotation was banged up, Woo stayed mostly healthy in 2025 and made a career-high 30 regular-season starts while leading the team with 186.2 innings. He did miss the final week-plus of the regular season due to a pectoral strain but returned to the mound against the Blue Jays in the ALCS. Woo's 2.94 ERA and 0.93 WHIP were nearly identical from 2024, but he improved his strikeout rate nearly six points to 27.1 percent while maintaining a 4.9 percent walk rate, which ranked fourth among qualified starting pitchers. A 3.10 xERA and 3.33 xFIP indicate he may have gotten some fortunate results at times, but his numbers were good enough that even some regression isn't a major concern. He took advantage of having pitcher-friendly T-Mobile Park as his home stadium with a 2.44 ERA, but he also pitched to a 3.40 ERA on the road. More durability was a welcome sight given Woo's health issues in the past, which combined with the improved strikeout numbers will significantly raise his fantasy profile for 2026. Read Past Outlooks
RANKS
Rest of Season From Preseason
#40
ADP
Signed a one-year contract with the Mariners in March of 2026.
Tamed by Tigers
PSeattle Mariners
June 6, 2026
Woo (5-4) took the loss Friday, coughing up five runs on nine hits over 6.1 innings as the Mariners fell 7-3 to the Tigers. He struck out seven without walking a batter.
Analysis
Only one of the hits off Woo went for extra bases, but it was a two-run homer by Kerry Carpenter in the third inning that put Detroit in the lead for good. It's the third time in seven starts since the beginning of May that the right-hander has been tagged for at least four runs, and over that stretch he sports a 3.64 ERA in 42 innings despite a 0.95 WHIP, 48:8 K:BB and just three home runs allowed. Woo will look to bounce back in his next outing, which is scheduled to come on the road next week in Baltimore.
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Pitching Stats
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2026 MLB Game Log
2026
2025
2024
2023
2026 MLB Game Log
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2025 MLB Game Log
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2024 MLB Game Log
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2023 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
86
Last 10 Games
87
Last 5 Games
94
How many pitches does Bryan Woo generally throw?
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
What part of the game does Bryan Woo generally pitch?
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2024
Even Split
2026
 
 
-7%
BAA vs LHP
2025
 
 
-3%
BAA vs LHP
2024
 
 
-10%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .208 790 182 43 153 28 1 25
Since 2024vs Right .207 719 192 20 143 21 1 22
2026vs Left .212 170 41 11 33 6 0 5
2026vs Right .229 136 34 3 30 3 1 2
2025vs Left .197 371 89 24 67 14 1 12
2025vs Right .203 360 109 12 70 11 0 14
2024vs Left .222 249 52 8 53 8 0 8
2024vs Right .200 223 49 5 43 7 0 6
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2024
 
 
-34%
ERA at Home
2026
 
 
-53%
ERA at Home
2025
 
 
-28%
ERA at Home
2024
 
 
-25%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 2.43 0.77 185.0 20 3 0 9.6 1.4 0.9
Since 2024Away 3.69 1.08 200.0 9 11 0 7.9 1.6 1.3
2026Home 2.37 0.71 38.0 4 0 0 10.2 1.4 0.5
2026Away 5.08 1.28 39.0 1 4 0 7.4 1.8 1.2
2025Home 2.44 0.80 88.2 10 2 0 10.2 1.6 1.2
2025Away 3.40 1.04 98.0 5 5 0 9.0 1.8 1.3
2024Home 2.47 0.77 58.1 6 1 0 8.5 0.9 0.8
2024Away 3.29 1.02 63.0 3 2 0 6.6 1.0 1.3
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Stat Review
How does Bryan Woo 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
5.36
 
K/9
8.8
 
BB/9
1.6
 
HR/9
0.8
 
Fastball
95.6 mph
 
ERA
3.74
 
WHIP
1.00
 
BABIP
.283
 
GB/FB
0.88
 
Left On Base
64.0%
 
Exit Velocity
82.8 mph
 
Barrels/BBE
3.3%
 
Spin Rate
2286 rpm
 
Balls Hit 95+ MPH
24.0%
 
Swinging Strike
12.1%
 
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 Bryan Woo See More
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Past Fantasy Outlooks
2025
2024
Woo's 2024 season was an extension of his professional resume: impressive stints disrupted by injury. Woo required an internal brace procedure after his collegiate career in 2021, but reached the majors in 2023 and worked 131.2 innings while skipping over Triple-A in the process. The 2024 season saw him pitch nearly the same amount of innings between the majors and a minor league rehab assignment due to a mid-summer hamstring injury that preceded a forearm discomfort scare in mid-June. Woo throws five different pitches to both lefties and righties, with his sweeper being the deadliest of them all. Woo mainly used the sweeper to neutralize righties (.100 avg, 42 percent whiff rate) while using his changeup to lefties (.186 avg, 21 percent whiff rate), which helped his four-seam fastball (.218 avg, 27 percent whiff rate) play up extremely well. The pieces are here for Woo to take a step forward in 2025 like the other starters around him have recently done, but his health troubles need to get out of the way for him to fully realize his potential.
A sixth-round pick in 2021, Woo debuted in June to little fanfare. He ended up taking the ball 18 times for the Mariners around a stint on the injured list with right forearm inflammation, and Woo pitched well enough to position himself as the club's fifth starter -- at least tentatively. Woo throws the kitchen sink at opposing hitters (four-seamer, sinker, cutter, slider, changeup) and it's all helped by the extension he gets on his throws. His strikeout rate was relatively modest at 25.1%, but his minor-league K rates suggest there is room for growth in that department. He was bit by the long ball occasionally, and it's possible Seattle brings in another starter to two this winter to bump Woo down the depth chart. He's not assured of a starting role to begin 2024, but Woo will likely be needed for a good number of starts either way.
More Fantasy News
Excellent in fifth win
PSeattle Mariners
May 30, 2026
Woo (5-3) allowed two hits and struck out nine without walking a batter over seven scoreless innings to earn the win Saturday over the Diamondbacks.
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Falls apart in fifth inning
PSeattle Mariners
May 24, 2026
Woo (4-3) took the loss Sunday against the Royals, allowing four runs on six hits and two walks in 4.2 innings. He struck out four.
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Posts six scoreless frames Monday
PSeattle Mariners
May 18, 2026
Woo (4-2) earned the win Monday, allowing three hits and two walks over six scoreless innings against the White Sox. He struck out eight.
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Strikes out nine in win
PSeattle Mariners
May 12, 2026
Woo (3-2) allowed two runs on four hits and two walks while striking out nine over six innings to earn the win Tuesday against the Astros.
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Dominant in rebound effort
PSeattle Mariners
May 6, 2026
Woo (2-2) earned the win Wednesday over Atlanta, allowing just one hit and two walks over six scoreless innings. He struck out nine.
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Latest Fantasy Rumors
Expected to be in ALCS roster
PSeattle Mariners
October 11, 2025
Woo is dealing with a pectoral injury but is expected to be included on the Mariners' ALCS roster, Adam Jude of The Seattle Times reports.
Analysis
Woo wasn't included on the ALDS roster, but it appears he'll be back for the ALCS. However, the right-hander likely won't be available for the first few games of the series, meaning his postseason debut will presumably come after the series moves to Seattle for Games 3 and 4.
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