MLB Prop Bets: Seattle Mariners vs Athletics (September 4, 2026)
The Athletics (55-86) face the Seattle Mariners (66-75) at T-Mobile Park on Friday at 10:10pm (ET). Let's take a look at the MLB Prop Bets for the matchup. J.T. Ginn is the probable pitcher for the Athletics, while Logan Gilbert is the probable pitcher for the Mariners.
- The Athletics have a 71-65-5 O/U record this season (meaning 71 games have gone over the total runs line, 65 have gone under and five have resulted in a push). The Mariners have a 72-61-8 O/U record.
Scoring Insights
- The Athletics are averaging 4.4 runs per game this season (19th in the league). Comparatively, the Mariners are averaging only 4.0 (30th).
- In the field, the Athletics are allowing a whopping 5.7 runs per game this season (30th in the league), while the Mariners are allowing an average of 4.4 runs (15th).
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 Athletics are at .247 (ranking 13th in the Major leagues), while the Mariners are batting .229 (29th).
Home Runs
- In terms of total home runs this season, the Mariners have hit 162 (15th in the Major Leagues). Meanwhile, the Athletics have managed 168 (T10th).
Runs Batted In
- Finally, looking at their runs batted in, the Athletics have recorded 592 RBIs to rank 18th in the MLB this season. Comparatively, the Mariners have recorded 538 RBIs to rank 30th.
Pitching Insights:
Earned Run Average
- The Mariners have an earned run average of 4.20 this season (18th in the Majors), while The Athletics have an ERA of 5.44 (30th).
Strikeouts
- Turning our attention to total strikeouts, the Athletics have recorded 1196 this season, ranking 12th in the MLB. Meanwhile, the Mariners rank 15th for total strikeouts, recording 1186.
Opponent Batting Average
- Opponents are batting an average of .251 against the Mariners this season (22nd in the Major Leagues). Comparatively, the Athletics' opponents are at .269 (29th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Athletics | 29-44-68 | 17-21-31 | 12-23-37 | 8-10-17 | 21-34-51 | 0-0-0 | 1-5-4 |
| Mariners | 34-37-70 | 21-16-32 | 13-21-38 | 27-25-52 | 7-12-18 | 0-0-0 | 2-3-5 |
Lead After Three Innings
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Athletics | 50-60-31 | 28-30-11 | 22-30-20 | 11-16-8 | 39-44-23 | 0-0-0 | 3-7-0 |
| Mariners | 58-53-30 | 32-22-15 | 26-31-15 | 41-37-26 | 17-16-4 | 0-0-0 | 5-4-1 |
NRFI/YRFI
- The NRFI is 64-77 in Athletics games this season. The Mariners have a 63-78 NRFI record.
Last Time They Met
The Athletics recorded an upset 7-4 victory over the Mariners at T-Mobile Park yesterday. Despite being on the wrong side of that result, Julio Rodriguez went yard in that matchup, hitting a home run to go with 2 RBIs. That result snapped the Mariners' four-game winning streak against the Athletics.
