The Seattle Mariners look to gain ground on the Athletics in the AL West when the two teams face off tonight.
Seattle took the series opener 9-2 on Monday, yet is listed as a +100 underdog ahead of tonight’s divisional showdown.
My Mariners vs. A’s predictions break down why there’s a good chance of another convincing Seattle win, with Emerson Hancock facing an unproven A’s rookie.
Read more in my MLB picks for Tuesday, May 26.
Who will win Mariners vs A's tonight: Mariners (+100)
While the Seattle Mariners were already looking at a favorable matchup against Luis Severino, the veteran right-hander has been pushed back to start in tomorrow's series finale.
However, a looming matchup against A’s rookie Gage Jump now presents itself as arguably even more advantageous for Seattle, who are rocking a 114 wRC+ on the road over the past month, a far cry from the 91 mark they’ve posted at home.
Jump hasn’t exactly been lights out in the minors this season, posting a 4.50 ERA through 38 innings in Triple-A, including a 4.74 BB/9 and a 16.7% HR/FB rate. This is a perfect spot to fade a young southpaw being thrust into a last-minute debut.
COVERS INTEL: Despite a 26-29 record, Seattle owns a +13 run differential, the fourth-best mark in the AL. That should equate to a 29-26 Pythagorean record that would have the Mariners 10th in baseball.
Mariners vs A's Over/Under pick: Under 9.5 (-110)
Emerson Hancock’s fastball sits in the 99th percentile in run value at Baseball Savant, and his wFB metric of 8.6 ranks fifth among all eligible pitchers this season.
Meanwhile, the Athletics are having issues generating consistent offense. Their 26.4% hard-hit rate is second-lowest in the majors the past week, driving a 1.28 GB/FB ratio and a .111 ISO.
Once Hancock gives way to the pen, I’m expecting the A’s to continue struggling to find runs. The Mariners rank sixth in BB% and ninth in K% over the past month, and both bullpens should perform well enough to limit late scoring.
- ML/RL bets: 6-12, -7.11 units
- Over/Under bets: 11-7, +3.28 units
Mariners vs A's odds
- Moneyline: Mariners +100 | A's -120
- Run line: Mariners +1.5 (-150) | A's -1.5 (+170)
- Over/Under: Over 9.5 (-110) | Under 9.5 (-110)
Mariners vs A's trend
The A's are 4-6 SU over their last 10 games. Find more MLB betting trends for Mariners vs. A's.
How to watch Mariners vs A's and game info
| Location | Sutter Health Park, Sacramento, CA |
| Date | Tuesday, May 26, 2026 |
| First pitch | 9:40 p.m. ET |
| TV | Mariners.TV, NBC Sports California |
| Mariners starting pitcher | Emerson Hancock (3-2, 3.07 ERA) |
| A's starting pitcher | Gage Jump (0-0, 0.00 ERA) |
Mariners vs A's latest injuries
Mariners vs A's weather
Odds are correct at the time of publishing and are subject to change.
Not intended for use in MA.
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