Seattle Mariners vs Milwaukee Brewers Picks and Prediction for Thursday, August 20, 2026
The Seattle Mariners visit the Milwaukee Brewers at American Family Field on Thursday, with the first pitch at 2:10 PM ET. Seattle is 59-67, third in the AL West, and 26-38 on the road after a 22-0 loss to Milwaukee in its most recent completed game. The Mariners have won three of their last five games. Milwaukee is 78-48, first in the NL Central, and 42-22 at home after Tuesday’s win. The Brewers have won four of five and three straight. Make your bets count with our free MLB picks.
Seattle Mariners Look for an Offensive Response
Seattle is batting .229 with a .309 on-base percentage and .377 slugging percentage while scoring 489 runs and hitting 145 home runs. Randy Arozarena leads the regular lineup with a .274 average and .366 OBP, while Julio Rodriguez has a team-high 19 home runs. Cole Young leads Seattle with 56 RBIs. Before Tuesday’s shutout, the Mariners had scored 21 runs across three games in Houston, including a 10-5 victory Saturday.
The Mariners own a 3.97 team ERA and 1.22 WHIP, with opponents batting .247. Seattle has recorded 1,066 strikeouts against 318 walks, with the low walk total helping the staff limit free baserunners. Tuesday was a major setback after Seattle had allowed 17 runs across its previous four games. The Mariners also entered this series having held Houston to two runs Sunday and the Yankees scoreless last Thursday, showing better pitching form before Milwaukee’s outburst.
Injuries: Taylor Ward (Day-To-Day), J.P. Crawford (10-Day IL), Carlos Vargas (60-Day IL), Will Wilson (60-Day IL), Bryan Woo (Day-To-Day).
Milwaukee Brewers Carry Strong Form
Milwaukee is batting .252 with a .337 on-base percentage and .396 slugging percentage while scoring 630 runs. Jake Bauers leads the Brewers with 22 home runs while batting .278 with a .387 OBP and .512 slugging percentage. Brice Turang has 16 homers and a team-high 75 RBIs while batting .265. Milwaukee scored 22 runs Tuesday after producing 16 over its previous four games, with Christian Yelich, David Hamilton, Luis Lara and Bauers all homering.
The Brewers have a 3.43 team ERA and 1.16 WHIP while holding opponents to a .219 batting average. Milwaukee has recorded 1,221 strikeouts and allowed 129 home runs. The Brewers have surrendered only 10 runs across their last five games, holding four opponents to three runs or fewer. That stretch includes allowing only seven runs during four games at Dodger Stadium before shutting out Seattle Tuesday.Â
Injuries: Cooper Pratt (10-Day IL), Joel Kuhnel (15-Day IL), Rob Zastryzny (60-Day IL), Sal Frelick (10-Day IL), Abner Uribe (15-Day IL).
Pitching Matchup
Seattle Mariners – George Kirby
Kirby is 8-9 with a 3.89 ERA and 1.31 WHIP across 136.2 innings. The right-hander has allowed 148 hits, 31 walks and 17 home runs while striking out 114. Kirby faces a Milwaukee lineup ranked seventh in MLB in batting average and featuring several strong on-base threats.Â
Milwaukee Brewers – Robert Gasser
Gasser is 3-5 with a 4.54 ERA and 1.24 WHIP through 73.1 innings. The left-hander has allowed 72 hits, 19 walks and 13 home runs while recording 68 strikeouts. Seattle presents a favorable matchup based on season-long production, with the Mariners ranked 28th in MLB with a .229 batting average. Seattle does have 145 home runs, so Gasser must limit mistakes.
Seattle Mariners vs Milwaukee Brewers Game Pick
- Milwaukee Brewers
Milwaukee is the game pick behind its stronger overall form, deeper lineup and excellent home record. The Brewers are 78-48 and have won four of five, while Seattle enters at 59-67 with a 26-38 road record. Milwaukee also holds clear advantages in batting average, runs scored, team ERA, and WHIP. Kirby has better individual numbers than Gasser, but the Brewers have scored 38 runs across five games. Milwaukee’s lineup and pitching staff provide enough support to overcome that starting-pitching difference Thursday.
Seattle Mariners vs Milwaukee Brewers Over/Under Pick
- Under
The under is the total pick despite Milwaukee’s 22-run performance Tuesday. That result stands far outside the Brewers’ recent scoring pattern, as Milwaukee had scored 16 runs over its previous four games. Seattle was also shut out Tuesday but had allowed only two runs Sunday and none last Thursday. Kirby owns a 3.89 ERA and has issued only 31 walks across 136.2 innings. Milwaukee’s staff carries a 3.43 ERA and .219 opponent average, helping to keep the scoring low on Thursday.