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Astros vs Mariners Predictions, Pick, Odds: Derek Carty’s Player Prop for Saturday, April 11

Astros vs Mariners Predictions, Pick, Odds: Derek Carty’s Player Prop for Saturday, April 11 article feature image
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Apr 5, 2026; Anaheim, California, USA; Seattle Mariners pitcher Luis Castillo (58) reacts following the second inning against the Los Angeles Angels at Angel Stadium. Mandatory Credit: Gary A. Vasquez-Imagn Images

The Seattle Mariners (5-9) host the Houston Astros (6-8) on April 11, 2026. First pitch from T-Mobile Park is scheduled for 9:40 p.m. EDT. The game will be broadcast on SEAM.

The Mariners are favored by -152 on the moneyline and -1.5 on the run line. The Astros are +128 on the moneyline and +1.5 on the run line. The total is set at 7.5 runs.

Find my MLB picks and Astros vs Mariners prediction below, as well as probable pitchers, weather report, and more.


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Astros vs Mariners Predictions, Pick

  • Astros vs Mariners Pick: Luis Castillo Over 5.5 Strikeouts


Astros vs Mariners Odds, Run Line, & Spread

Astros Logo
Saturday, Apr 11
9:40 p.m. ET
SEAM
Mariners Logo
Astros Odds
SpreadTotalMoneyline
+1.5
-166
7.5
-102o / -120u
+128
Mariners Odds
SpreadTotalMoneyline
-1.5
+138
7.5
-102o / -120u
-152
Odds via FanDuel. Get up-to-the-minute MLB odds here.
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Astros vs Mariners Polymarket Odds

Houston Astros vs Seattle Mariners — Live Prediction Market
Current odds: HOU 42% · SEA 59% · MLB

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Astros vs Mariners Player Prop Pick

By Derek Carty

THE BAT X is forecasting 6.20 strikeouts for Castillo.

Oddsmakers are implying 5.44 strikeouts, so I believe there is value.

If you take the over, you’d be projected to win 59% of the time, resulting in a 28% ROI with an expected value of $28.28 (based on a $100 wager).

This play is good down to at least -107.

Love THE BAT X? Get all of Carty’s sports betting projections at EV Analytics!

Pick: Luis Castillo Over 5.5 Strikeouts

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Astros vs Mariners Weather


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