Seattle Mariners vs Houston Astros

Seattle Mariners at Houston Astros (2026-08-14). George Kirby vs Peter Lambert at Daikin Park.

Starters — George Kirby enters with a 3.68 ERA, 1.27 WHIP, and 132.0 innings, with 7.64 K/9, 1.91 BB/9, and 1.09 HR/9. His last three starts were mixed: 5.0 IP, 1 ER, 2 K, 2 BB; 7.0 IP, 0 ER, 3 K, 1 BB; and 4.0 IP, 7 ER, 3 K, 0 BB. The overall trend is listed as down, though two of the last three outings were effective at run prevention. Peter Lambert has a 3.09 ERA, 1.15 WHIP, and 113.2 innings, with 8.79 K/9, 3.48 BB/9, and 0.95 HR/9. His last three starts were steady: 5.0 IP, 2 ER, 3 K, 3 BB; 5.2 IP, 2 ER, 8 K, 2 BB; and 5.0 IP, 2 ER, 6 K, 1 BB. His trend is up, supported by three straight starts allowing exactly two earned runs.

Teams — Seattle has a .681 OPS, 469 runs scored, a .228 team average, and a pitching staff with a 3.81 ERA and 1.21 WHIP. The recent form is poor at 3-7 over the last 10, which matters for a lineup that has been below Houston in both OPS and total runs. Houston brings a .730 OPS, 559 runs scored, and a .243 team average, giving the Astros the stronger offensive profile in this matchup. On the mound as a team, Houston has a 4.54 ERA and 1.35 WHIP, which is weaker than Seattle’s overall staff performance, and the Astros are 5-5 in their last 10. Bettors can frame this game as Seattle bringing the better full-season run prevention numbers, while Houston counters with the more productive offense and the hotter individual starter.