MLB Prop Bets: Seattle Mariners vs Houston Astros (July 18, 2025)
The Houston Astros (56-40) face the Seattle Mariners (51-45) at T-Mobile Park on Friday at 10:10pm (ET). Let's take a look at the MLB Prop Bets for the matchup.
- The Astros have a 42-51-3 O/U record this season (meaning 42 games have gone over the total runs line, 51 have gone under and three have resulted in a push). The Mariners have a 54-38-4 O/U record.
Scoring Insights
- The Astros are averaging 4.4 runs per game this season (T15th in the league). Comparatively, the Mariners are averaging 4.7 (8th).
- In the field, the Astros are allowing only 3.8 runs per game this season (3rd in the league), while the Mariners are allowing an average of 4.4 runs (18th).
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 Astros are at .258 (ranking 1st in the Major leagues), while the Mariners are batting .250 (13th).
Home Runs
- In terms of total home runs this season, the Mariners have hit 136 (6th in the Major Leagues). Meanwhile, the Astros have managed 110 (13th).
Runs Batted In
- Finally, looking at their runs batted in, the Astros have recorded 399 RBIs to rank 18th in the MLB this season. Comparatively, the Mariners have recorded 435 RBIs to rank 7th.
Pitching Insights:
Earned Run Average
- The Mariners have an earned run average of 3.89 this season (16th in the Majors), while The Astros have an ERA of 3.61 (5th).
Strikeouts
- Turning our attention to total strikeouts, the Astros have recorded 930 this season, ranking 1st in the MLB. Meanwhile, the Mariners rank T16th for total strikeouts, recording 799.
Opponent Batting Average
- Opponents are batting an average of .243 against the Mariners this season (15th in the Major Leagues). Comparatively, the Astros' opponents are at .225 (2nd).
First Innings Moneyline
- Here are their first innings moneyline records in 2025.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Astros | 16-22-58 | 8-14-30 | 8-8-28 | 9-16-44 | 7-6-14 | 0-0-0 | 1-4-5 |
| Mariners | 23-22-51 | 8-9-29 | 15-13-22 | 16-14-32 | 7-8-19 | 0-0-0 | 1-3-6 |
Lead After Three Innings
- Here are their records after the first three innings in 2025.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Astros | 34-36-26 | 20-23-9 | 14-13-17 | 24-27-18 | 10-9-8 | 0-0-0 | 2-4-4 |
| Mariners | 39-29-28 | 19-11-16 | 20-18-12 | 29-15-18 | 10-14-10 | 0-0-0 | 4-2-4 |
NRFI/YRFI
- The NRFI is 55-41 in Astros games this season. The Mariners have a 46-50 NRFI record.
Last Time They Met
The Astros recorded a 5-3 victory over the Mariners at Daikin Park when these teams last met on May 25. Christian Walker dominated at the plate in that matchup, notching 1 home run, 2 singles and 3 RBIs.
