MLB Prop Bets: Athletics vs Seattle Mariners (September 12, 2026)
The Seattle Mariners (69-79) face the Athletics (60-88) at Sutter Health Park on Saturday at 9:40pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Bryan Woo is the probable pitcher for the Mariners, while Gage Jump is the probable pitcher for the Athletics. The Mariners are favored to win at -175, while the Athletics are at +144. The total runs line is set at 9.5, with OVER at -110 and UNDER at -110.
- The Mariners (-110) have a 57-91 Run Line record this season, while the Athletics (-110) hold a record of 70-78.
- The Mariners have a 76-63-9 O/U record this season (meaning 76 games have gone over the total runs line, 63 have gone under and nine have resulted in a push). The Athletics have a 75-68-5 O/U record.
Scoring Insights
- The Mariners are averaging 4.0 runs per game this season (30th in the league). Comparatively, the Athletics are averaging +0.4 more at 4.4 runs (20th).
- In the field, the Mariners are allowing 4.5 runs per game this season (17th in the league), while the Athletics are allowing an average of 5.6 runs (29th).
Let's take a look at how these teams perform in some other key statistical areas.
Batting Insights:
Batting Average
- Looking at their batting averages this season, the Mariners are at .229 (ranking 29th in the Major leagues), while the Athletics are batting .246 (14th).
Home Runs
- In terms of total home runs this season, the Athletics have hit 180 (10th in the Major Leagues). Meanwhile, the Mariners have managed 166 (T17th).
Runs Batted In
- Finally, looking at their runs batted in, the Mariners have recorded 564 RBIs to rank T29th in the MLB this season. Comparatively, the Athletics have recorded 619 RBIs to rank 19th.
Pitching Insights:
Earned Run Average
- The Athletics have an earned run average of 5.33 this season (29th in the Majors), while The Mariners have an ERA of 4.22 (20th).
Strikeouts
- Turning our attention to total strikeouts, the Mariners have recorded 1259 this season, ranking 12th in the MLB. Meanwhile, the Athletics rank 14th for total strikeouts, recording 1243.
Opponent Batting Average
- Opponents are batting an average of .268 against the Athletics this season (29th in the Major Leagues). Comparatively, the Mariners' opponents are at .251 (23rd).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Mariners | 34-39-75 | 21-17-37 | 13-22-38 | 27-27-57 | 7-12-18 | 0-0-0 | 1-2-7 |
| Athletics | 31-44-73 | 19-21-33 | 12-23-40 | 8-10-17 | 23-34-56 | 0-0-0 | 2-3-5 |
Lead After Three Innings
The Mariners are -160 to lead after three innings, while the Athletics are +124.
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Mariners | 58-57-33 | 32-25-18 | 26-32-15 | 41-41-29 | 17-16-4 | 0-0-0 | 3-4-3 |
| Athletics | 54-61-33 | 31-31-11 | 23-30-22 | 11-16-8 | 43-45-25 | 0-0-0 | 5-3-2 |
NRFI/YRFI
The NRFI market is paying -115 and the YRFI is paying -110.
- The NRFI is 68-80 in Mariners games this season. The Athletics have a 69-79 NRFI record.
Last Time They Met
The Athletics recorded a 6-5 extra innings victory over the Mariners at Sutter Health Park yesterday. Lawrence Butler was unstoppable in that matchup, hitting a home run, a double and recording 2 RBIs. That result snapped the Mariners' three-game winning streak against the Athletics at Sutter Health Park.
