Seattle Mariners vs Milwaukee Brewers Prediction, 8/18/2026 MLB Picks, Best Bets & Odds

Game: Seattle Mariners vs Milwaukee Brewers

Date: Tuesday, August 18, 2026

Location: American Family Field in Milwaukee, WI

TV: Brewers.TV

Odds/Point Spread: Seattle (+102) Milwaukee (-122)

The Milwaukee Brewers (77-48) will compete against the Seattle Mariners (59-66) at American Family Field on Tuesday. The odds on this game have the Mariners at +102 and the Brewers are opening at -122. The total comes in at 8.5. The men taking the mound will be Bryce Miller and Kyle Harrison.

As a team, the Seattle Mariners are putting up 3.9 runs per outing, which has them at 29th in the league. They have notched a total of 489 runs while having a team on-base percentage of .309. The Mariners have hit 152 doubles as a team and have hit 145 baseballs out of the stadium. They have tallied 473 runs batted in in addition to 951 base knocks on the year, while their average at the plate comes in at .230. Seattle has a slugging percentage of .378 and have been rung up 1,069 times, while being walked on 413 occasions.

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The Mariners are sitting with a team earned run average of 3.85 this season (9th in the league), and their staff has rung up 1,060 batters. Mariners pitchers have yielded 137 long balls and also 512 total runs (8th in baseball). Their pitching staff has walked 313 players from the other team and their FIP comes in at 3.77 as a team on the year. Seattle has surrendered 1,019 hits (8.3 per 9 innings) as well as 472 earned runs. Their strikeout to walk ratio is 3.39 and the pitching staff has earned a collective WHIP of 1.21.

The Mariners relievers have accumulated a save percentage of 58.3% and stepped onto the hill in 115 save situations. They have earned 28 saves on the season and have missed out on 20 out of their 48 chances to save the game. The bullpen pitchers have inherited 123 base runners so far this year and 30.1% of them ended up crossing the plate. Mariners bullpen pitchers have come into the game with players on base 88 times in addition to having 130 appearances in high leverage situations. The Mariners have dispatched 375 relievers to the mound for the season. The relief pitchers have recorded 66 holds over the course of the season (16th in MLB).

The Seattle Mariners have a tally of 3,312 putouts at this point in the season, as well as 1,015 assists and 60 errors. Their fielding percentage is currently at .986 which has them ranked 14th in MLB, and they have turned 102 double plays. The Mariners have turned 69.6% of balls hit into play into outs out of 9,936 innings, which ranks them 19th in the majors.

Miller (28-27 career win-loss record) sits with a FIP of 3.84 while he has gone up against 1,964 opposing batters in the major leagues. He has allowed 416 hits (7.7 hits per nine innings) and has 121 walks. His ERA is 3.90 (211 earned runs allowed) and his career WHIP is 1.103. Miller has thrown 487 frames and has tallied 448 punch outs so far in his career.

The Milwaukee Brewers hold an OBP of .335 in addition to a team batting average of .250 this year. They have been rung up on 1,050 occasions (16th in baseball) and have a total of 1,055 base knocks. Milwaukee has knocked in 113 home runs on the year to go along with 574 runs batted in. The Brewers have a team slugging percentage of .392 and they are recording 4.86 runs per game (5th in the league). They have recorded 220 two-baggers, while walking 522 times and earning 608 runs.

The Milwaukee pitching staff have given up 472 runs on the year while holding a team ERA of 3.50 (434 earned runs yielded). They have surrendered 129 long balls and they surrender 3.80 runs per 9 innings (2nd in baseball). The Brewers are sitting with a team WHIP of 1.157 and are the owners of a FIP of 3.59 as a unit for the season. Their K/BB ratio comes in at 9.80 (1,211 strikeouts vs 389 walks). They come in at 2nd in MLB as a staff in total hits given up with 904.

Milwaukee relievers have an inherited score rate of 41.3% out of their 138 inherited runners. Their relief pitchers have come in 125 times in high leverage situations and also on 99 occasions with runners on base. Sitting with 122 save situations, the Brewers have 63 holds in addition to 18 blown saves. They rank 9th in MLB holding a save percentage of 69.0%, and they have sent 379 bullpen pitchers onto the diamond on the year.

In 10,056 innings on the field, the Brewers are sitting with a efficiency on defense of 71.3% (6th in baseball). The Milwaukee Brewers have gotten 94 double plays and hold a fielding percentage of .987 (9th in professional baseball). The Brewers have 973 assists, 55 errors and have earned 3,352 putouts so far this year.

So far in his career, Harrison has allowed 270 base hits while accumulating 305 punch outs in 287 innings. He has surrendered a total of 131 earned runs while earning a WHIP of 1.257 and being the owner of a FIP of 4.0. His strikeout to walk ratio is 3.35 and he has faced 1,219 opposing hitters so far in his pro baseball career. Harrison (18-12 mark in his career) has a 4.10 earned run average while conceding 8.5 hits per 9 innings.

Who will win tonight's MLB game against the spread or moneyline?

Guy Bruhn's Pick: Take Seattle (+102)

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