MLB Prop Bets: Seattle Mariners vs Houston Astros (April 12, 2026)
The Houston Astros (6-9) face the Seattle Mariners (6-9) at T-Mobile Park on Sunday at 4:10pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Logan Gilbert is the probable pitcher for the Mariners, while the Astros' probable pitcher remains unclear.
- The Astros have an 11-4-0 O/U record this season (meaning 11 games have gone over the total runs line and four have gone under). The Mariners have a 7-8-0 O/U record.
Scoring Insights
- The Astros are averaging 6.1 runs per game this season (2nd in the league). Comparatively, the Mariners are averaging only 3.8 (T23rd).
- In the field, the Astros are allowing a whopping 6.3 runs per game this season (30th in the league), while the Mariners are allowing an average of 3.7 runs (7th).
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 an impressive .281 (ranking 2nd in the Major leagues), while the Mariners are batting an underwhelming .193 (29th).
Home Runs
- In terms of total home runs this season, the Mariners have hit 14 (T9th in the Major Leagues). Meanwhile, the Astros have managed 18 (T3rd).
Runs Batted In
- Finally, looking at their runs batted in, the Astros have recorded 86 RBIs to rank 2nd in the MLB this season. Comparatively, the Mariners have recorded 54 RBIs to rank T19th.
Pitching Insights:
Earned Run Average
- The Mariners have one of the strongest earned run averages this season, sitting at 3.14 (4th in the Majors), while the Astros are at the opposite end of the scale with an ERA of 6.47 (30th).
Strikeouts
- Turning our attention to total strikeouts, the Astros have recorded 147 this season, ranking 3rd in the MLB. Meanwhile, the Mariners rank T9th for total strikeouts, recording 134.
Opponent Batting Average
- Opponents are batting an average of .229 against the Mariners this season (12th in the Major Leagues). Comparatively, the Astros' opponents are at .265 (30th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Astros | 5-3-7 | 3-0-4 | 2-3-3 | 2-1-7 | 3-2-0 | 0-0-0 | 4-3-3 |
| Mariners | 3-5-7 | 2-3-4 | 1-2-3 | 3-4-5 | 0-1-2 | 0-0-0 | 3-4-3 |
Lead After Three Innings
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Astros | 5-4-6 | 2-2-3 | 3-2-3 | 2-4-4 | 3-0-2 | 0-0-0 | 4-2-4 |
| Mariners | 4-5-6 | 3-4-2 | 1-1-4 | 3-4-5 | 1-1-1 | 0-0-0 | 1-4-5 |
NRFI/YRFI
- The NRFI is 6-9 in Astros games this season. The Mariners have a 5-10 NRFI record.
Last Time They Met
The Mariners recorded an upset 8-7 victory over the Astros at T-Mobile Park yesterday. Yordan Alvarez was unstoppable in that matchup, hitting a home run, a double and recording an RBI. The Mariners have now won five straight against the Astros.
