Bryan Woo

Bryan Woo

25-Year-Old PitcherSP
Seattle Mariners
2025 Fantasy Outlook
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. Read Past Outlooks
RANKS
Rest of Season From Preseason
#143
ADP
$Signed a one-year contract with the Mariners in March of 2025.
Another quality start Friday
PSeattle Mariners
April 18, 2025
Woo (2-1) took the loss Friday against the Blue Jays after allowing three runs on seven hits and two walks in seven innings. He struck out four.
ANALYSIS
Friday marked the third quality start already this year for Woo, who was charged with his first loss despite throwing at least six innings in his fourth straight outing to open the campaign. Woo gave up just one extra-base hit, and two of his three runs allowed came on sacrifice flies. The hard-throwing right-hander should remain an upper-echelon fantasy starter as long as he stays healthy, and Woo sports a 3.12 ERA, 1.04 WHIP and 22:6 K:BB over 26 innings this season ahead of a tough spot in next week's scheduled start in Boston.
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Pitching Stats
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2025
2024
2023
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2024 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
88
Last 10 Games
88
Last 5 Games
88
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 2023
 
 
-21%
BAA vs RHP
2025
 
 
-11%
BAA vs RHP
2024
 
 
-10%
BAA vs RHP
2023
 
 
-37%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .244 480 98 33 107 18 2 19
Since 2023vs Right .192 467 118 17 85 12 0 10
2025vs Left .234 51 11 2 11 2 0 2
2025vs Right .208 53 11 4 10 1 0 0
2024vs Left .222 249 52 8 53 8 0 8
2024vs Right .200 223 49 5 43 7 0 6
2023vs Left .283 180 35 23 43 8 2 9
2023vs Right .179 191 58 8 32 4 0 4
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2023
 
 
-36%
ERA at Home
2025
 
 
-72%
ERA at Home
2024
 
 
-25%
ERA at Home
2023
 
 
-31%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 2.62 0.90 106.2 10 3 0 9.5 1.5 1.0
Since 2023Away 4.07 1.14 128.1 5 6 0 7.3 2.2 1.2
2025Home 1.38 0.92 13.0 2 0 0 8.3 2.1 0.7
2025Away 4.85 1.15 13.0 0 1 0 6.9 2.1 0.7
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
2023Home 3.31 1.10 35.1 2 2 0 11.5 2.3 1.5
2023Away 4.82 1.28 52.1 2 3 0 8.3 3.8 1.2
More Splits View More Split Stats
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
3.67
 
K/9
7.6
 
BB/9
2.1
 
HR/9
0.7
 
Fastball
95.6 mph
 
ERA
3.12
 
WHIP
1.04
 
BABIP
.270
 
GB/FB
1.04
 
Left On Base
74.4%
 
Exit Velocity
81.4 mph
 
Barrels/BBE
4.8%
 
Spin Rate
2258 rpm
 
Balls Hit 95+ MPH
20.0%
 
Swinging Strike
11.6%
 
Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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2024 Fantasy Outlook
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
Fans seven in victory
PSeattle Mariners
April 12, 2025
Woo (2-0) earned the win over Texas on Saturday, allowing one run on six hits and one walk while striking out seven batters over seven innings.
ANALYSIS
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Coughs up four runs
PSeattle Mariners
April 6, 2025
Woo allowed four runs on five hits and a walk over six innings in a no-decision against the Giants on Sunday. He struck out six during the loss.
ANALYSIS
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Impressive season debut
PSeattle Mariners
March 30, 2025
Woo (1-0) earned the win Sunday over the A's, allowing one run on three hits and two walks over six innings. He struck out five.
ANALYSIS
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Dominates in short outing
PSeattle Mariners
March 6, 2025
Woo struck out six over 2.1 scoreless innings in Thursday's Cactus League game against the Angels, giving up just one walk and one hit.
ANALYSIS
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Finishes season on high note
PSeattle Mariners
September 27, 2024
Woo (9-3) allowed three hits and a walk while striking out eight over five shutout innings to earn the win over the Athletics on Friday.
ANALYSIS
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Latest Fantasy Rumors
Potential trade piece?
PSeattle Mariners
January 28, 2024
Woo has been mentioned in trade talks with the White Sox as the Mariners are attempting to acquire Dylan Cease, per Bob Nightengale of USA Today.
ANALYSIS
The right-hander would be the centerpiece of a potential trade, with Bryce Miller also being mentioned as a possible centerpiece. Woo delivered a solid rookie campaign last season with a 4.21 ERA, 1.21 WHIP and 93:31 K:BB over 87.2 innings.
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