MLB Prop Bets: Houston Astros vs Seattle Mariners (August 14, 2026)
The Seattle Mariners (57-65) face the Houston Astros (62-60) at Daikin Park on Friday at 8:10pm (ET). Let's take a look at the MLB Prop Bets for the matchup. George Kirby is the probable pitcher for the Mariners, while Peter Lambert is the probable pitcher for the Astros. The Astros are favored to win at -131, while the Mariners are at +109. The total runs line is set at 8.0, with OVER at -117 and UNDER at -103.
- The Mariners (-194) have a 47-75 Run Line record this season, while the Astros (+159) hold a record of 63-59.
- The Mariners have a 58-56-8 O/U record this season (meaning 58 games have gone over the total runs line, 56 have gone under and eight have resulted in a push). The Astros have a 64-51-7 O/U record.
Scoring Insights
- The Mariners are averaging 3.8 runs per game this season (30th in the league). Comparatively, the Astros are averaging +0.7 more at 4.6 runs (10th).
- In the field, the Mariners are allowing 4.1 runs per game this season (7th in the league), while the Astros are allowing an average of 4.8 runs (24th).
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 .228 (ranking 29th in the Major leagues), while the Astros are batting .243 (13th).
Home Runs
- In terms of total home runs this season, the Astros have hit 162 (4th in the Major Leagues). Meanwhile, the Mariners have managed 142 (16th).
Runs Batted In
- Finally, looking at their runs batted in, the Mariners have recorded 453 RBIs to rank 30th in the MLB this season. Comparatively, the Astros have recorded 532 RBIs to rank 10th.
Pitching Insights:
Earned Run Average
- The Astros have an earned run average of 4.54 this season (25th in the Majors), while The Mariners have an ERA of 3.81 (8th).
Strikeouts
- Turning our attention to total strikeouts, the Mariners have recorded 1036 this season, ranking 12th in the MLB. Meanwhile, the Astros rank 10th for total strikeouts, recording 1061.
Opponent Batting Average
- Opponents are batting an average of .237 against the Astros this season (9th in the Major Leagues). Comparatively, the Mariners' opponents are at .244 (16th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Mariners | 27-30-65 | 17-14-31 | 10-16-34 | 25-23-51 | 2-7-14 | 0-0-0 | 3-1-6 |
| Astros | 34-32-56 | 18-12-29 | 16-20-27 | 13-12-24 | 21-20-32 | 0-0-0 | 1-2-7 |
Lead After Three Innings
The Mariners are +100 to lead after three innings, while the Astros are -130.
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Mariners | 48-45-29 | 28-20-14 | 20-25-15 | 38-36-25 | 10-9-4 | 0-0-0 | 5-3-2 |
| Astros | 43-50-29 | 25-21-13 | 18-29-16 | 18-21-10 | 25-29-19 | 0-0-0 | 5-3-2 |
NRFI/YRFI
The NRFI market is paying -125 and the YRFI is paying -105.
- The NRFI is 60-62 in Mariners games this season. The Astros have a 53-69 NRFI record.
Last Time They Met
The Mariners recorded an 8-3 victory over the Astros at Daikin Park when these teams last met on May 14. Yordan Alvarez was unstoppable in that matchup, hitting a home run, a double and recording an RBI.
