- Matchup: Houston Astros vs Seattle Mariners
- Scheduled For: Wednesday, September 23, 2026
- Venue: T-Mobile Park, Seattle, WA
- Broadcast: MLB.TV
- Betting Odds: Houston (+106) Seattle (-128)
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T-Mobile Park will host the Seattle Mariners (73-83) as they face off against the Houston Astros (77-79) this Wednesday. The Astros come into this matchup at a moneyline of +106, while the Mariners are positioned at -128. The over/under for this encounter is set at 9 runs. Expected to pitch are Ethan Pecko and George Kirby.
The Astros have a slugging percentage of .410 and have struck out 1,282 times, while earning walks on 502 occasions. They have accumulated 657 RBIs and 1,255 hits this season, maintaining a batting average of .240. As a team, they’ve recorded 228 doubles and hit 209 home runs, scoring a total of 688 runs with an on-base percentage of .313. Houston averages 4.4 runs per game, ranking 19th in the league.
Houston’s pitchers have a K/BB ratio of 2.17 and a team WHIP of 1.34. The Astros have allowed 201 home runs and surrendered 747 runs (24th in MLB), along with 1,233 hits at a rate of 8.0 per 9 innings. Their collective earned run average stands at 4.53 (24th in the league), with 1,359 strikeouts. They’ve issued 626 walks, leading to a FIP of 4.57 for the season.
Houston has utilized 506 relievers this year. The bullpen has inherited 222 runners, with 26.1% scoring. They have secured 86 holds, ranking 12th in MLB. The Astros’ relief pitchers have pitched with runners on base 147 times and faced high leverage situations 160 times. They have tallied 48 saves but missed 13 out of their 61 save opportunities, leading to a 78.7% save rate.
As a unit, the Astros converted 70.8% of balls in play into outs, ranking 9th in MLB, with 4,151 putouts, 1,155 assists, and 70 errors. Their fielding percentage of .987 places them 10th in baseball, along with 123 double plays recorded.
Pecko has pitched for 28 innings, earning 19 strikeouts in his MLB career. His ERA is 3.83, yielding 12 earned runs with a WHIP of 1.135. He’s allowed 20 hits (6.4 hits per 9 innings) and issued 12 walks. Pecko’s career record is 1-0 with a FIP of 3.77 and has faced 116 batters during his MLB tenure.
The Seattle Mariners have achieved a .312 on-base percentage and a .232 batting average this season. They’ve struck out 1,352 times (9th in MLB) and compiled a total of 1,202 hits. Seattle has hit 179 home runs and recorded 611 RBIs this season, with a team slugging percentage of .380, averaging 4.06 runs per game (28th in MLB). They have 198 doubles and drawn 526 walks, accumulating 634 runs.
As a pitching staff, the Mariners have a WHIP of 1.260 and a team FIP of 3.99. They rank 22nd in MLB in hits allowed with 1,318 and have surrendered 690 runs, resulting in a team ERA of 4.19 (640 earned runs). Their K/BB ratio stands at 8.70 (1,328 strikeouts vs. 415 walks), with 187 home runs allowed and an average of 4.52 runs yielded per 9 innings (15th in MLB).
Seattle’s relievers have inherited 173 runners, allowing 32.4% to score. They’ve appeared 161 times in critical situations and faced runners on base 123 times. In 144 save situations, the Mariners recorded 80 holds and had 28 blown saves, ranking 25th in MLB with a 55.6% save rate, utilizing 482 relievers this season.
Seattle has turned 121 double plays and holds a .985 fielding percentage (18th in MLB). With 1,286 assists, 83 errors, and 4,126 putouts this season, the Mariners’ defensive efficiency stands at 68.9% (25th in MLB) across their 12,378 innings.
Kirby (54-45 career record) boasts a 3.73 ERA, allowing 9.0 hits per nine innings. His strikeout to walk ratio is 5.58, and he has faced 3,319 batters in his MLB career. With 334 earned runs and a WHIP of 1.171, his FIP is 3.7. Throughout his professional career, Kirby has given up 807 hits while racking up 764 strikeouts over 806 innings pitched.
Who will emerge victorious in tonight’s MLB matchup against the spread or moneyline?
Prediction: Back Houston (+106)
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