2025 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
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
Dominates in short outing
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
Woo dominated in this abbreviated outing, striking out the side in the first inning and generating a 59 percent whiff rate across his 37 pitches. Health concerns have kept the 25-year-old right-hander in the middle rounds of fantasy drafts this spring, but Woo excelled when available last season in the form of a 2.89 ERA, 0.90 WHIP and 101:13 K:BB through 121.1 frames (22 starts). With the benefit of throwing at the pitcher-friendly T-Mobile Park for home games, Woo carries plenty of upside in 2025 but will need to prove he can handle a full workload before establishing himself as an upper-echelon starter.
Woo dominated in this abbreviated outing, striking out the side in the first inning and generating a 59 percent whiff rate across his 37 pitches. Health concerns have kept the 25-year-old right-hander in the middle rounds of fantasy drafts this spring, but Woo excelled when available last season in the form of a 2.89 ERA, 0.90 WHIP and 101:13 K:BB through 121.1 frames (22 starts). With the benefit of throwing at the pitcher-friendly T-Mobile Park for home games, Woo carries plenty of upside in 2025 but will need to prove he can handle a full workload before establishing himself as an upper-echelon starter.
Pitching Stats
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2025
2024
2023
Minor League Game Log
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Left/Right Pitching Splits
Since 2023
-23%
BAA vs RHP
2025
No Stats
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .246 | 87 | 31 | 96 | 17 | |||
| Since 2023vs Right | .190 | 107 | 13 | 75 | 10 | |||
| 2025vs Left | 0 | 0 | 0 | 0 | 0 | |||
| 2025vs Right | 0 | 0 | 0 | 0 | 0 | |||
| 2024vs Left | .222 | 52 | 8 | 53 | 8 | |||
| 2024vs Right | .200 | 49 | 5 | 43 | 6 | |||
| 2023vs Left | .283 | 35 | 23 | 43 | 9 | |||
| 2023vs Right | .179 | 58 | 8 | 32 | 4 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2023
-30%
ERA at Home
2025
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 2.79 | 0.90 | 93.2 | 9.6 | 1.4 | ||||
| Since 2023Away | 3.98 | 1.14 | 115.1 | 7.3 | 2.3 | ||||
| 2025Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2025Away | 0 | 0 | 0 | 0 | 0 | ||||
| 2024Home | 2.47 | 0.77 | 58.1 | 8.5 | 0.9 | ||||
| 2024Away | 3.29 | 1.02 | 63.0 | 6.6 | 1.0 | ||||
| 2023Home | 3.31 | 1.10 | 35.1 | 11.5 | 2.3 | ||||
| 2023Away | 4.82 | 1.28 | 52.1 | 8.3 | 3.8 | ||||
| More Splits→ | View More Split Stats | ||||||||
Prospect Rankings History
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Defensive Stats
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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
Finishes season on high note
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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Fades in sixth inning
Woo allowed four runs on seven hits and a walk while striking out four over six innings in a no-decision versus the Rangers on Sunday.
ANALYSIS
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Pummeled for seven runs
Woo (8-3) took the loss Tuesday against the Yankees, allowing seven runs on nine hits and a walk while striking out seven over 4.2 innings.
ANALYSIS
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Has no-hitter broken up in seventh
Woo (8-2) picked up the win over the Padres on Wednesday, allowing two runs on two hits and one walk over 6.2 innings while striking out five.
ANALYSIS
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Picks up seventh win
Woo (7-2) earned the win Thursday, allowing two runs on eight hits over five innings against the A's. He struck out six.
ANALYSIS
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Latest Fantasy Rumors
Potential trade piece?
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.
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.