- Matchup: Seattle Mariners vs Milwaukee Brewers
- Date: Thursday, August 20, 2026
- Venue: American Family Field, Milwaukee, WI
- Broadcast: Brewers.TV
- Betting Odds: Seattle (+125) Milwaukee (-145)
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The Seattle Mariners (59-67) are set to face off against the Milwaukee Brewers (78-48) at American Family Field this Thursday. The betting lines have Seattle positioned at +125, while Milwaukee is favored at -145. The over/under for this matchup is set at 8 runs, with the starting pitchers being George Kirby and Robert Gasser.
The Seattle Mariners average just 3.9 runs per game, ranking them 30th in the league. The team has scored a total of 489 runs and boasts an on-base percentage of .309. Collectively, the Mariners have recorded 154 doubles and hit 145 home runs this season. They have tallied 473 RBIs and 956 hits, resulting in a batting average of .229. Their slugging percentage stands at .377, and they’ve struck out 1,079 times while accumulating 417 walks.
The Mariners have a K/BB ratio of 3.35 and a WHIP of 1.22. The pitching staff has allowed 141 home runs and given up a total of 534 runs (ranking 9th in MLB). Seattle’s pitchers have surrendered 1,041 hits (an average of 8.4 per 9 innings) alongside 490 earned runs. The team’s ERA for the season stands at 3.97, placing them 11th in the league, and they have struck out 1,066 hitters. Their staff has also issued 318 walks, with a FIP of 3.82 for the year.
Seattle’s relief pitchers have a save percentage of 58.3%, having entered 115 save situations, converting 28 saves while failing on 20 out of 48 attempts. They’ve inherited 123 base runners, with 30.1% scoring, and have made 130 high-leverage appearances, sending 378 relievers to the mound this year. Overall, they have earned 66 holds (17th in MLB).
Defensively, the Mariners have converted 69.3% of balls in play into outs over 10,008 innings, ranking 23rd in professional baseball. They boast 3,336 putouts, 1,027 assists, and 64 errors, with a fielding percentage of .986 (16th in the majors), including 102 double plays.
George Kirby has pitched 773 innings in his professional career, recording 735 strikeouts. His career ERA is 3.64 (allowing 313 earned runs) with a WHIP of 1.148, having given up 764 hits (8.9 hits per nine innings) and 124 walks. Kirby holds a career win-loss record of 53-43 and a FIP of 3.59, facing a total of 3,168 batters in the majors.
On the other hand, the Brewers have a slugging percentage of .396 and average 5.00 runs per game, ranking 4th in the league. They’ve connected for 222 doubles, along with 527 walks and 630 runs batted in. This season, the Brewers have hit 117 home runs, with 592 RBIs, and have been struck out 1,056 times (16th in MLB), accumulating 1,076 hits. The team has an on-base percentage of .337 and a batting average of .252.
The Brewers’ pitching staff has allowed 472 runs this season, carrying an ERA of 3.43 (with 429 earned runs). They have given up 129 home runs and allow an average of 3.77 runs per nine innings (2nd in the league). The Brewers have a team WHIP of 1.156 and a FIP of 3.58 across the season. Their K/BB ratio is an impressive 9.80 (1,221 strikeouts against 393 walks), currently ranking first in MLB for fewest hits allowed (909).
Milwaukee’s relief pitchers have an inherited scoring rate of 41.3% out of their 138 inherited runners. They have made 125 high-leverage appearances and 99 appearances with runners on base. Amidst 122 save situations, the Brewers achieved 63 holds and recorded 18 blown saves. They sit 9th in MLB for save percentage at 69.0%, using 382 relievers throughout the season.
Milwaukee has turned 94 double plays with a .987 fielding percentage (9th in the majors). They’ve registered 981 assists, 56 errors, and achieved 3,379 putouts this season. Over 10,137 innings, the Brewers have a defensive efficiency of 71.3% (6th in professional baseball).
Robert Gasser (with a career win-loss record of 5-7) carries a 3.98 ERA, yielding 8.9 hits per 9 innings. His K/BB ratio stands at 3.71, with 457 hitters faced in his MLB career. He has allowed 47 earned runs, holding a WHIP of 1.214 and a FIP of 3.9. Over his MLB tenure, Gasser has permitted 105 hits while recording 89 strikeouts across 106 innings.
Who will emerge victorious in tonight’s MLB game either against the spread or on the moneyline?
Prediction: Bet on Seattle (+125)
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