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Seattle Mariners vs Houston Astros Starting Lineup — Saturday, Aug 15, 2026

Saturday, Aug 15, 2026Daikin Park7:10 PMPreviewStarting Lineups
SEA · Away

Seattle Mariners

SP: Emerson Hancock · ERA 3.35
@
7:10 PM
HOU · Home

Houston Astros

SP: Hayden Wesneski · ERA 3.86
Lineups PendingAnnounced ~1–2 hrs before first pitch · 7:10 PM ET
Full matchup preview

Expected Batting Order

Official lineups not yet announced for this game. Check back closer to game time.

No lineup data available for Seattle Mariners.

No lineup data available for Houston Astros.

◆ Matchup preview

Seattle Mariners at Houston Astros (2026-08-15). Emerson Hancock vs Hayden Wesneski at Daikin Park.

Starters — Hancock has a 3.35 ERA and 1.12 WHIP across 121 innings, with 8.26 K/9, 2.23 BB/9, and 1.12 HR/9. His last three starts were 4.2 innings with 2 earned runs, 6 innings with 3 earned runs, and 5 innings with 3 earned runs. The profile is steady, and the listed trend is up. Wesneski has a 3.86 ERA and 1.18 WHIP over 18.2 innings, with 5.79 K/9, 2.89 BB/9, and 0.96 HR/9. His last three starts were 7 innings with 3 earned runs, 6 innings with 2 earned runs, and 5.2 innings with 3 earned runs. He has worked efficiently so far, though the sample is still small.

Teams — Seattle owns a .683 OPS and 476 runs, with a .229 team average. The Mariners pitching staff has a 3.85 ERA and 1.21 WHIP, but the club is just 2-8 over its last 10 games. Houston brings a .731 OPS and 569 runs, with a .244 team average. The Astros staff has a 4.55 ERA and 1.35 WHIP, and they are 5-5 in their last 10. From a betting angle, Seattle shows the stronger full-season run prevention numbers, while Houston has the more productive offense and better overall contact profile.

Key facts
Hancock has a 3.35 ERA, 1.12 WHIP, and 8.26 K/9 in 121 IPHouston offense leads this matchup with a .731 OPS and 569 runsSeattle staff edge: 3.85 team ERA and 1.21 WHIP vs Houston’s 4.55 and 1.35