The Seattle Mariners head to Sutter Health Park in Sacramento to face the Athletics on Saturday, September 12, 2026, with first pitch set for 9:40 PM ET. Bryan Woo gets the ball for Seattle against Athletics left-hander Gage Jump in what shapes up as an intriguing late-season AL West matchup. With the regular season winding down, every game in the division carries weight, and the Mariners will be looking to take care of business on the road against a young Oakland squad still finding its footing at its temporary Sacramento home.

Pitching Matchup: Bryan Woo vs. Gage Jump

Bryan Woo is Seattle's assignment tonight, and the right-hander has continued to develop into one of the more reliable arms in the Mariners' rotation. Woo's blend of stuff and command gives Seattle a legitimate shot to control this game from the opening frame. The key for him, as always, will be staying efficient through the lineup and keeping the Athletics' contact hitters off the bases.

On the other side, Gage Jump is a name Mariners fans should get familiar with. The young Athletics arm represents exactly the kind of unpredictability that can bite a road team late in the season — pitchers with limited big-league track records can be tough to square up early, especially in an unfamiliar environment. Seattle's hitters will need to be patient, work counts, and not let Jump settle into a rhythm.

Oakland Athletics Lineup: Keys for Woo to Navigate

The Athletics are running out a lineup that features some legitimate offensive threats Woo will need to manage carefully.

• Lawrence Butler (RF, 3rd) — Butler has emerged as one of Oakland's most dangerous bats and represents the biggest challenge in this order. Woo cannot afford to let Butler beat him with fastballs in hitter's counts.
• Shea Langeliers (DH, 4th) — A legitimate power presence hitting cleanup. Langeliers has the ability to change the game with one swing, and Woo must work carefully around him.
• Zack Gelof (3B, 6th) — Gelof provides another dangerous option deeper in the order. Even if Woo navigates the top of the lineup, he cannot coast through the six-hole.
• Henry Bolte (CF, leadoff) — Bolte's speed at the top of the order means Woo needs to be sharp early. Base runners on for Butler and Langeliers is a scenario Seattle wants to avoid.

Keys to the Game for Seattle

• Woo's pitch efficiency: Getting deep into the game means limiting walks and keeping the count in his favor against a lineup that can string hits together.
• Early offense against Jump: Don't let the young Athletics starter get comfortable. Work counts, find his patterns, and do damage before he settles in.
• Bullpen management: With the season in its final stretch, protecting the bullpen while still winning close games is a balancing act Seattle's coaching staff must navigate.
• Road discipline: Sutter Health Park is an unconventional venue for big-league baseball. Staying focused and not letting the environment become a distraction is on the Mariners' checklist.

Prediction

This one sets up favorably for Seattle. Bryan Woo is the more proven commodity on the mound tonight, and if he pitches to his capabilities, the Mariners should be able to manufacture enough offense to get the win. Expect a competitive game through five or six innings before Seattle's bullpen closes it out. Mariners win, 4-2.

Catch the action on Mariners.TV or listen live on Seattle Sports 710 AM.