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MLBGame PreviewsSeattle Mariners at Athletics
@
Sutter Health Park

Score Prediction

Pre-match Prediction
Seattle Mariners
@
Athletics
Seattle Mariners 60%Athletics 40%
Market LinesRun Line: Seattle Mariners -1.5Total: O/U 9.5
Model: Under 9.5
Model projects 9.0 total runs vs 9.5 line

Seattle Mariners

0022446688101012121414OVERUNDERO/U 9.5Runs ScoredRuns Allowed
All Over 9.5
37%
55/148
MLB: 48%
Starter
41%
11/27
vs ATH
55%
6/11
Avg Total
8.4
MLB: 8.9
Game Starter (27) Last Starter vs ATH vs ATH (11)
Bryan Woo #22 · RHP · Age 26
4.03
ERA (2026)
9.1
K/9 (2026)
27
Starts (2026)
8.4
Avg Total (2026)
Last 3:
W ATH (Sep 06): 8.0IP, 0ER, 9K
W @BOS (Sep 01): 6.0IP, 1ER, 7K
L PHI (Aug 26): 4.0IP, 6ER, 5K
vs ATH: L (Jul 30 2025): 6.1 IP, 5 ER, 6 K
Bullpen (2026 Season)Average
ERA: 4.05MLB Avg: 3.9510 relievers
Workload Alert: Allowed 10 runs on 2026-09-08 vs TEX. Bullpen arms likely still recovering.
Recent: W 2-0L 5-10W 3-2W 4-3L 5-6
Lineup vs Bryan Woo (Career)
BatterPosPAAVGOPSHR
Lawrence ButlerRF26.0830.3621
Jonah HeimC16.2500.5630
Zack Gelof3B16.2000.4500
Darell HernaizSS7.2861.0001
Carlos CortesRF6.1670.3340
Jeff McNeil2B6.1670.3340
Donovan Walton2B5.0000.4000
Alika WilliamsSS3.0000.0000
Brian ServenC3.0000.0000
Henry BolteCF3.3330.6660
Max Muncy3B3.0000.0000
3 batters with no matchup history

Athletics

0022446688101012121414OVERUNDERO/U 9.5Runs ScoredRuns Allowed
All Over 9.5
49%
73/148
MLB: 48%
Starter
42%
8/19
vs SEA
55%
6/11
Avg Total
10.0
MLB: 8.9
Game Starter (19) Last Starter vs SEA vs SEA (11)
Gage Jump #61 · LHP · Age 23
5.12
ERA (2026)
9.9
K/9 (2026)
19
Starts (2026)
9.1
Avg Total (2026)
Last 3:
L @SEA (Sep 06): 4.0IP, 2ER, 7K
L @TEX (Aug 31): 4.1IP, 7ER, 2K
W MIN (Aug 25): 6.1IP, 2ER, 9K
vs SEA: L (May 26 2026): 5.0 IP, 4 ER, 5 K
Bullpen (2026 Season)Poor
ERA: 4.90MLB Avg: 3.9511 relievers
Recent: L 0-2W 6-5L 2-4W 2-0W 6-5
Lineup vs Gage Jump (Career)
BatterPosPAAVGOPSHR
J.P. CrawfordSS5.5000.9000
Josh Naylor1B5.4000.8000
Julio RodriguezCF5.4000.8000
Randy ArozarenaLF5.4000.8000
Cole Young2B3.0000.0000
Cal RaleighC2.5001.0000
Dominic CanzoneDH2.5001.0000
Jhonny PeredaC2.0000.0000
Michael ArroyoSS2.0000.0000
Victor RoblesRF2.10002.5000
Weston Wilson3B2.0000.0000
3 batters with no matchup history
Our Top PicksLive Odds
Top PickSeattle Mariners -1.5 (-102) | MEDIUM co
Seattle Mariners -1.5 (-102) | MEDIUM confidence The market prices a 2-run Seattle win at just 50.5% implied probability. Given Woo's 8-inning shutout...
PickUnder 9.0 Runs (+102) | LOW confidence O
Under 9.0 Runs (+102) | LOW confidence Our model is broadly in line with the market's 9.5 total line, so there is no meaningful gap at that number. St...
PickBryan Woo Over 5.5 Strikeouts (-102) | M
Bryan Woo Over 5.5 Strikeouts (-102) | MEDIUM confidence Woo's 2026 K/9 sits at 9.09, backed by 158 strikeouts in 156.1 innings. His last three starts...
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Seattle Mariners vs Athletics Game Preview

Bryan Woo is the entire story heading into tonight's rematch at Sutter Health Park. Six days ago, he walked into this exact stadium and systematically dismantled the Athletics lineup: 8.0 innings, zero earned runs, 9 strikeouts. Now he returns with the same six days of rest, the same opponent, the same roster. His 2026 ERA sits at 4.03, but that number does not capture what he is right now. Over his last two starts combined: 14 innings, 1 earned run, 16 strikeouts. The market prices a Mariners moneyline win at -164. The run line at -1.5 is available at -102. That gap is where the value lives.

Gage Jump stands on the opposite side of this equation with a completely different profile. The 23-year-old lefty carries a 5.12 ERA across 96.2 innings in 2026, and his last three starts spell out the risk in plain numbers: a 9-strikeout gem against Minnesota in 6.1 innings, then a 7-earned-run collapse in Texas in 4.1 innings, then 7 strikeouts in just 4.0 innings against this same Seattle Mariners lineup six days ago, with a loss. The raw stuff is real. The command is not. Jump walks 4.2 batters per 9 innings, and that is the central liability against a lineup that has already studied his full repertoire. Crawford posted a .900 OPS in 5 plate appearances against Jump in 2026. Naylor, Arozarena, and Rodriguez each hit .400 AVG with .800 OPS in their recent exposure. A leaky walk rate plus a lineup that has already been through this film session is a bad combination for a young pitcher in a must-hold situation.

The batter-versus-pitcher data on Woo's side is not circumstantial. It is concrete and current. Lawrence Butler is batting .083 against Woo across 26 career plate appearances, with a 0.362 OPS. In 2026 specifically, he is 0-for-3 with a 0.000 OPS. Zack Gelof: 16 career PA, .200 AVG, 0.450 OPS, and again 0.000 OPS against Woo this season. Alika Williams, Max Muncy, and Brian Serven all post 0.000 OPS against Woo in 2026 plate appearances. These numbers are not scattered across different eras or pitching versions. This is the same pitcher, the same park, six days later. The edge does not care about narrative. It cares about these numbers.

The one legitimate concern for tonight's MLB action is late-inning depth for Seattle. Closer Andrés Muñoz is flagged as significantly fatigued after 41 pitches over consecutive days across three appearances in five games. As pregame reporting noted: "Muñoz complicates the late innings further. Seattle might use him again, but I can't assume either his availability or freshness." If Woo goes seven or eight innings, that concern largely disappears. If the game tightens in the eighth with a one-run lead, the Mariners are navigating without their best arm. The Athletics are 7-3 over their last 10 games, so they are not a soft opponent. But their offensive metrics against this specific pitcher, especially from hitters currently in their lineup, say their recent form has hard limits tonight.

Seattle Mariners vs Athletics Key Insights

  • Bryan Woo posted 8.0 IP, 0 ER, 9 K against this exact Athletics lineup six days ago at this same venue. Four current ATH regulars, including Butler, Gelof, Muncy, and Williams, all post 0.000 OPS against him in 2026. This is not a small-sample coincidence. It is the same pitcher, park, and roster.
  • Gage Jump's 4.2 BB/9 walk rate is the structural liability of this matchup. Crawford (.900 OPS), Naylor (.800 OPS), Arozarena (.800 OPS), and Rodriguez (.800 OPS) have all punished Jump in their limited but very recent 2026 exposure. Early base runners against this lineup tend to turn into runs.
  • Andrés Muñoz's availability is the primary late-inning risk for Seattle. If the game sits at 3-2 heading into the eighth inning, the Mariners bullpen is tested without its anchor. Woo innings make this concern irrelevant. Short ones amplify it significantly.
  • The Athletics are 7-3 over their last 10 games, which gives the +1.5 hook some surface-level appeal. But that overall form line does not reflect how this specific Oakland lineup performs against this specific pitcher. BvP data takes precedence over recent record in a direct rematch.
  • Jump's last three starts show alarming variance: 9 K in 6.1 IP against Minnesota, 7 ER in 4.1 IP at Texas, 7 K in 4.0 IP against this Seattle lineup. His ceiling is legitimate. His floor is a game-altering disaster. That gap matters enormously against a lineup that has studied him.
  • Cal Raleigh is running a 1.071 OPS over his last 28 days with 21 home runs on the season. His 2026 exposure to Jump in this series: 2 PA, .500 AVG, 1.000 OPS. At +215 to homer against a struggling lefty, his power upside is a number worth noting.

Seattle Mariners vs Athletics Betting Picks

Picks made September 12, 2026 at 05:37 AM ET. Odds shown reflect current market prices.

Under 9.0 Runs (+102) | LOW confidence O
Under 9.0 Runs (+102) | LOW confidence Our model is broadly in line with the market's 9.5 total line, so there is no meaningful gap at that number. Stepping down to 9.0 at +102 (49.5% implied) makes sense when the non-model evidence is considered: if Woo replicates anything near his Sep 06 performance, Oakland's contribution stays in the 1-2 run range. Even with Seattle scoring 4-5, Under 9.0 is reachable. Getting plus odds on this line adds expected value despite the thin margin. Hold at low confidence and size accordingly.
Moneyline | No Pick The market implies 6
Moneyline | No Pick The market implies 62.1% for Seattle, with no meaningful gap to justify a play on either side. When the edge is not there, pass. The run line and props in this game offer better entry points into the same underlying thesis without the additional juice.
Analysis insight — no specific bet associated
Bryan Woo Over 5.5 Strikeouts (-102) | M
Bryan Woo Over 5.5 Strikeouts (-102) | MEDIUM confidence Woo's 2026 K/9 sits at 9.09, backed by 158 strikeouts in 156.1 innings. His last three starts: 9 K, 7 K, 5 K. That 9-strikeout outing was against this exact Oakland lineup. Four current Athletics hitters own a 0.000 OPS against him in 2026. Getting Over 5.5 K at near-even money for an arm that just struck out 9 of these same hitters six days ago is a favorable price. Risk: an early exit on the scale of his Aug 26 meltdown (4.0 IP, 6 ER) would cap the strikeout upside quickly.
Lawrence Butler Under 0.5 Hits (+160) |
Lawrence Butler Under 0.5 Hits (+160) | HIGH confidence Butler is batting .083 against Woo in 26 career plate appearances with a 0.362 OPS. The trend is deteriorating year over year: 0.250 OPS in 2023, 0.286 OPS in 2024, 0.531 OPS in 2025, and 0.000 OPS in 3 PA in 2026. He is 0-for-3 against Woo this season. Getting +160 on a hitter whose career hit rate against this pitcher sits at roughly 8% is clear market value. This is the sharpest single-player suppression pattern in the entire matchup sheet.
Zack Gelof Under 0.5 Hits (+136) | MEDIU
Zack Gelof Under 0.5 Hits (+136) | MEDIUM confidence Gelof is 16 career PA against Woo, .200 AVG, 0.450 OPS. In 2026, he is 0-for-3 with a 0.000 OPS. The trend shows meaningful decline: 0.900 OPS in 2023 exposure, 0.286 OPS in 2024, 0.000 OPS this season. His overall season .251/.315/.455 slash is solid, but Woo has neutralized him consistently in recent exposure. Under 0.5 hits at +136 carries real value relative to what the 2026 numbers tell us. Risk: Gelof has 17 home runs on the year, and one mistake pitch changes everything.
Dominic Canzone Over 1.5 Total Bases (-1
Dominic Canzone Over 1.5 Total Bases (-111) | MEDIUM confidence Canzone is hitting .255/.326/.475 with 21 home runs in 2026, and his OPS against left-handed pitching is .822. Jump is a lefty with a 5.12 ERA who has allowed consistent hard contact all season. Their limited 2026 matchup: 2 PA, .500 AVG, 1.000 OPS from last week's series. Jump's last two outings were short and costly: 7 ER in 4.1 IP at Texas, 2 ER in 4.0 IP against Seattle. A power bat with a strong left-handed pitcher split, facing a 23-year-old lefty with control issues, at -111 is solid value.
Cal Raleigh to Hit a Home Run (+215) | L
Cal Raleigh to Hit a Home Run (+215) | LOW confidence Raleigh carries a 1.071 OPS over his last 28 days with 21 home runs on the season. His 2026 exposure to Jump in this series: 2 PA, .500 AVG, 1.000 OPS. Jump has allowed 10 home runs in 96.2 innings. Sutter Health Park carries a neutral home run factor of 1.0, so no park inflation applies here. This is a low-confidence flag, not a strong lean. But +215 on a hot power bat against a vulnerable lefty offers enough upside to merit a small look if you are building a power-prop card.
Same-Game Parlay
Same-Game Parlay: SEA -1.5 / Under 9.0 / Woo Over 5.5 K / Butler Under 0.5 Hits | MEDIUM confidence The SGP logic is internally consistent. Woo pitching a high-strikeout game directly suppresses the Oakland run total, making the Under 9.0 and the -1.5 cover natural byproducts of the same dominant performance. Butler going hitless is the sharpest single-batter proxy for Woo's effectiveness against this lineup. Legs: Mariners -1.5 (-102) [452794632>, Under 9.0 (+102) [452794620>, Woo Over 5.5 K (-102) [452984868>, Butler Under 0.5 Hits (+160) [452984549>. These legs reinforce rather than contradict each other.
No Run First Inning (NRFI) (-112) | MEDI
No Run First Inning (NRFI) (-112) | MEDIUM confidence Woo held this exact Oakland lineup scoreless for eight full innings six days ago. Butler, Gelof, McNeil, and Muncy all post 0.000 OPS against him in 2026. Jump's vulnerability to the top of Seattle's order is real, but scoring in the first inning requires sequencing, not just base runners. At -112 for NRFI versus -133 for YRFI, the market's slight lean toward no first-inning run aligns with Woo's recent command of this lineup. Risk: Jump walking the leadoff hitter could create early chaos before Woo even bats.

Key Players

Batting AverageSEA
Randy Arozarena
.272Batting Average
LF
Home RunsSEA
Randy Arozarena
22Home Runs
LF
Runs Batted InSEA
Randy Arozarena
67Runs Batted In
LF
Earned Run AverageSEA
Logan Gilbert
3.72Earned Run Average
SP
WinsSEA
Logan Gilbert
12Wins
SP
StrikeoutsSEA
Logan Gilbert
187Strikeouts
SP
Batting AverageATH
Jeff McNeil
.270Batting Average
2B
Home RunsATH
Shea Langeliers
23Home Runs
C
Runs Batted InATH
Nick Kurtz
69Runs Batted In
1B
WinsATH
J.T. Ginn
9Wins
SP
StrikeoutsATH
J.T. Ginn
121Strikeouts
SP

Recent Form

Seattle Mariners
W2-0Athletics
L10-5Texas Rangers
W3-2Texas Rangers
W4-3Texas Rangers
Athletics
L2-0Seattle Mariners
W6-5Toronto Blue Jays
L4-2Toronto Blue Jays
W2-0Toronto Blue Jays

Seattle Mariners vs Athletics Summary

This game is built on one central question: can Bryan Woo repeat September 6? The numbers say he can. Same park, same lineup, same six days of rest. Four Oakland hitters enter with a 0.000 OPS against him in 2026, and the matchup data shows that pattern has been building across multiple years for the team's better bats. Gage Jump has genuine stuff, but his walk rate against a Seattle lineup that has already seen his full arsenal creates the conditions for an early deficit. The run line at -1.5 priced at -102 implies just a 50.5% probability for a scenario with far more underlying support than that number suggests. That is where this game starts and ends.

The Under 9.0 at +102 is the secondary lean, held at low confidence because the model broadly aligns with the 9.5 market line, but the non-model case is legitimate: Woo holding Oakland to 1-2 runs while Seattle scores in the 4-5 range gets you there. The SGP tying Woo's strikeout performance to the -1.5 and Under is not a coincidence of construction. It is the same story told three ways. Andrés Muñoz's bullpen status remains the one variable that complicates the late innings if this game tightens unexpectedly. Plan around his absence rather than assuming his presence.

The edge does not care about which team has momentum on paper. It cares about the same pitcher facing the same lineup in the same park on the same rest. The data says Seattle covers. For the full slate, see our MLB picks today, NRFI picks, and player props.

Head-to-Head History

Season SeriesATH leads series 1-0
DateMatchupResult
Sep 12, 2026SEA @ ATHATHATH 6-5

Mariners vs Athletics predictions: Bryan Woo returns 6 days after 8 IP shutout of same lineup. Best bets: SEA -1.5 -102, Woo Over 5.5 K, Butler Under 0.5 hits.

Frequently Asked Questions

MLBGame PreviewsSeattle Mariners at Athletics