MLB Prop Bets: Seattle Mariners vs Philadelphia Phillies (August 25, 2026)
The Philadelphia Phillies (73-59) face the Seattle Mariners (63-69) at T-Mobile Park on Tuesday at 9:40pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Aaron Nola is the probable pitcher for the Phillies, while George Kirby is the probable pitcher for the Mariners. The Mariners opened as favorites but this has since changed, with the Phillies coming into -105 and Mariners drifting to -102. The total runs line is set at 8.0, with OVER at -110 and UNDER at -110.
- The Phillies (+154) have a 55-77 Run Line record this season, while the Mariners (-187) hold a record of 51-81.
- The Phillies have a 61-63-8 O/U record this season (meaning 61 games have gone over the total runs line, 63 have gone under and eight have resulted in a push). The Mariners have a 67-57-8 O/U record.
Scoring Insights
- The Phillies are averaging 4.6 runs per game this season (10th in the league). Comparatively, the Mariners are averaging only 4.0 (29th).
- In the field, the Phillies are allowing 4.4 runs per game this season (15th in the league), while the Mariners are allowing an average of 4.4 runs (T13th).
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 Phillies are at .243 (ranking 17th in the Major leagues), while the Mariners are batting .230 (28th).
Home Runs
- In terms of total home runs this season, the Mariners have hit 154 (T14th in the Major Leagues). Meanwhile, the Phillies have managed 159 (T10th).
Runs Batted In
- Finally, looking at their runs batted in, the Phillies have recorded 582 RBIs to rank 9th in the MLB this season. Comparatively, the Mariners have recorded 503 RBIs to rank 29th.
Pitching Insights:
Earned Run Average
- The Mariners have an earned run average of 4.11 this season (14th in the Majors), while The Phillies have an ERA of 4.13 (15th).
Strikeouts
- Turning our attention to total strikeouts, the Phillies have recorded 1302 this season, ranking 1st in the MLB. Meanwhile, the Mariners rank 11th for total strikeouts, recording 1122.
Opponent Batting Average
- Opponents are batting an average of .249 against the Mariners this season (21st in the Major Leagues). Comparatively, the Phillies' opponents are at .250 (22nd).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Phillies | 36-31-65 | 24-15-29 | 11-16-36 | 30-23-47 | 6-8-18 | 1-0-0 | 3-4-3 |
| Mariners | 33-34-65 | 20-15-31 | 13-19-34 | 26-24-51 | 7-10-14 | 0-0-0 | 6-4-0 |
Lead After Three Innings
The Phillies are -110 to lead after three innings, while the Mariners are -120.
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Phillies | 59-47-26 | 35-21-12 | 23-26-14 | 49-34-17 | 10-13-9 | 1-0-0 | 6-3-1 |
| Mariners | 54-49-29 | 31-21-14 | 23-28-15 | 40-36-25 | 14-13-4 | 0-0-0 | 6-4-0 |
NRFI/YRFI
The NRFI market is paying -120 and the YRFI is paying -110.
- The NRFI is 62-70 in Phillies games this season. The Mariners have a 60-72 NRFI record.
Last Time They Met
The Mariners recorded a 9-2 victory over the Phillies at T-Mobile Park yesterday. Cal Raleigh was crushing the ball in that matchup, hitting 3 home runs and recording 4 RBIs. That result snapped the Phillies' four-game winning streak against the Mariners.
