MLB Prop Bets: Seattle Mariners vs Houston Astros (April 11, 2026)
The Houston Astros (6-8) face the Seattle Mariners (5-9) at T-Mobile Park on Saturday at 9:40pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Lance McCullers Jr. is the probable pitcher for the Astros, while Luis Castillo is the probable pitcher for the Mariners. The Mariners are favored to win at -149, while the Astros are at +123. The total runs line is set at 7.5, with OVER at -110 and UNDER at -110.
- These teams share a 6-8 Run Line record this season. The Astros are -175 to cover the run line while the Mariners are +144.
- The Astros have a 10-4-0 O/U record this season (meaning 10 games have gone over the total runs line and four have gone under). The Mariners have a 6-8-0 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 3.5 (26th).
- In the field, the Astros are allowing a whopping 6.2 runs per game this season (29th in the league), while the Mariners are allowing an average of 3.4 runs (3rd).
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 .270 (ranking 2nd in the Major leagues), while the Mariners are batting an underwhelming .190 (30th).
Home Runs
- In terms of total home runs this season, the Mariners have hit 12 (T14th in the Major Leagues). Meanwhile, the Astros have managed 17 (4th).
Runs Batted In
- Finally, looking at their runs batted in, the Astros have recorded 79 RBIs to rank 2nd in the MLB this season. Comparatively, the Mariners have recorded 46 RBIs to rank T24th.
Pitching Insights:
Earned Run Average
- The Mariners have one of the strongest earned run averages this season, sitting at 2.86 (3rd in the Majors), while the Astros are at the opposite end of the scale with an ERA of 6.32 (30th).
Strikeouts
- Turning our attention to total strikeouts, the Astros have recorded 139 this season, ranking 3rd in the MLB. Meanwhile, the Mariners rank T11th for total strikeouts, recording 125.
Opponent Batting Average
- Opponents are batting an average of only .212 against the Mariners this season (5th in the Major Leagues). Alternatively, the Astros' opponents are at .266 (30th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Astros | 5-2-7 | 3-0-4 | 2-2-3 | 2-1-7 | 3-1-0 | 0-0-0 | 5-2-3 |
| Mariners | 2-5-7 | 1-3-4 | 1-2-3 | 2-4-5 | 0-1-2 | 0-0-0 | 2-4-4 |
Lead After Three Innings
The Astros are +110 to lead after three innings, while the Mariners are -140.
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Astros | 4-4-6 | 2-2-3 | 2-2-3 | 2-4-4 | 2-0-2 | 0-0-0 | 4-2-4 |
| Mariners | 4-4-6 | 3-3-2 | 1-1-4 | 3-3-5 | 1-1-1 | 0-0-0 | 2-3-5 |
NRFI/YRFI
The NRFI market is paying -130 and the YRFI is paying +100.
- The NRFI is 6-8 in Astros games this season. The Mariners have a 5-9 NRFI record.
Last Time They Met
The Mariners recorded a 9-6 victory over the Astros at T-Mobile Park yesterday. Randy Arozarena was unstoppable in that matchup, hitting a home run, a single and recording 3 RBIs. The Mariners have now won four straight against the Astros.
