Brewers vs Mariners Prediction, Odds & Player Prop Bets Today – MLB, Jul 21

Seattle Mariners designated hitter Mitch Haniger, left, follows through on a home run against the Cleveland Guardians during the first inning of a spring training baseball game Sunday, Feb. 25, 2024, in Peoria, Ariz. (AP Photo/Lindsey Wasson)
(AP Photo/Lindsey Wasson)
  • The Brewers are +105 favorites vs the Mariners
  • Brewers vs Mariners Over / Under today: 7 Runs
  • Brewers / Mariners TV Channel: RTNW | FDWI

The Milwaukee Brewers (+105) visit T-Mobile Park to take on the Seattle Mariners (-125) on Monday, July 21, 2025. First pitch is scheduled for 9:40pm EDT in Seattle, WA.

This season, the Brewers are 59-40 against the spread (ATS), while the Mariners are 42-55 ATS.

Brewers vs Mariners Starting Pitchers Today:

  • Brewers starting pitcher: Brandon Woodruff 1-0, 2.62 ERA
  • Mariners starting pitcher: George Kirby 4-4, 4.50 ERA

Brewers vs. Mariners Odds, Run Line, Over/Under & Moneyline

SpreadOver / UnderMoneyline
Brewers-1.5 +180O 7 -115+105
Mariners +1.5 -220U 7 -105-125

Brewers vs Mariners Prediction for Today’s Game

Based on recent trends the model predicts the Mariners will win Monday‘s MLB game with 53.5% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.


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We’ve highlighted some favorite MLB player prop bets for Brewers players for Monday‘s game, looking at profitable historical betting trends:

Best Brewers Player Prop Bets Today:

  • Isaac Collins has hit the Home Runs Over in 2 of his last 7 away games (+12.90 Units / 184% ROI)
  • Brice Turang has hit the Total Bases Over in 17 of his last 25 games (+10.40 Units / 30% ROI)
  • Brice Turang has hit the Hits Over in 20 of his last 25 games (+10.10 Units / 21% ROI)
  • Jackson Chourio has hit the Hits Runs and RBIs Over in 15 of his last 20 games (+10.00 Units / 41% ROI)
  • Isaac Collins has hit the Singles Over in 9 of his last 10 away games (+9.75 Units / 96% ROI)

And here are some favorite MLB player prop bets for Mariners players for Monday‘s game, looking at profitable historical betting trends:

Best Mariners Player Prop Best Bets Today:

  • Randy Arozarena has hit the Home Runs Over in 6 of his last 10 games at home (+24.70 Units / 247% ROI)
  • Logan Gilbert has hit the Pitching Outs Under in 17 of his last 20 games (+14.95 Units / 53% ROI)
  • J.P. Crawford has hit the Hits Over in 18 of his last 20 games (+13.85 Units / 34% ROI)
  • Randy Arozarena has hit the Runs Over in 17 of his last 25 games (+11.75 Units / 46% ROI)
  • Julio Rodriguez has hit the Total Bases Under in 13 of his last 15 games at home (+11.00 Units / 51% ROI)
  • The Milwaukee Brewers have hit the Moneyline in 38 of their last 53 games (+22.75 Units / 32% ROI)
  • The Milwaukee Brewers have hit the 1st Five Innings (F5) Moneyline in 48 of their last 95 games (+21.60 Units / 18% ROI)
  • The Milwaukee Brewers have covered the 1st Five Innings (F5) Run Line in 57 of their last 95 games (+14.00 Units / 12% ROI)
  • The Milwaukee Brewers have covered the Run Line in 25 of their last 37 away games (+13.35 Units / 25% ROI)
  • The Milwaukee Brewers have hit the 1st Five Innings (F5) Team Total Over in 54 of their last 92 games (+13.34 Units / 12% ROI)
  • The Seattle Mariners have hit the Game Total Over in 52 of their last 87 games (+16.85 Units / 18% ROI)
  • The Seattle Mariners have hit the Moneyline in 20 of their last 32 games (+7.35 Units / 18% ROI)
  • The Seattle Mariners have hit the 1st Five Innings (F5) Moneyline in 5 of their last 7 games (+6.35 Units / 69% ROI)
  • The Seattle Mariners have hit the Team Total Over in 7 of their last 8 games (+6.15 Units / 65% ROI)
  • The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Over in 23 of their last 39 games at home (+4.25 Units / 9% ROI)

Brewers Against the Spread (ATS) Record

Against the spread this season, the Brewers are 53-44 against the Run Line (+2.4 Units / 1.78% ROI).

  • 59-40 when betting on the Moneyline for +17.4 Units / 13.88% ROI
  • 42-54 when betting on the total runs Over for -17.95 Units / -16.38% ROI
  • 54-42 when betting on the total runs Under for +7.9 Units / 7.29% ROI

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 42-55 against the Run Line (-13.65 Units / -11.34% ROI).

  • 53-46 when betting on the Moneyline for -2.75 Units / -2.12% ROI
  • 55-39 when betting on the total runs Over for +12.15 Units / 11.19% ROI
  • 39-55 when betting on the total runs Under for -21.62 Units / -19.78% ROI

Mariners vs Brewers Home Run Prop Bets Today

Over Under
Cal Raleigh (SEA) 0.5 +260 0.5 -325
Randy Arozarena (SEA) 0.5 +400 0.5 -525
Julio Rodriguez (SEA) 0.5 +525 0.5 -750
Jorge Polanco (SEA) 0.5 +575 0.5 -800
William Contreras (MIL) 0.5 +625 0.5 -1000

Mariners vs Brewers Total Hits Prop Bets Today

Over Under
Julio Rodriguez (SEA) 0.5 -235 0.5 +175
Brice Turang (MIL) 0.5 -235 0.5 +175
Jackson Chourio (MIL) 0.5 -220 0.5 +165
William Contreras (MIL) 0.5 -220 0.5 +165
Christian Yelich (MIL) 0.5 -200 0.5 +150

Mariners vs Brewers RBI Prop Bets Today

Over Under
Cal Raleigh (SEA) 0.5 +145 0.5 -190
Randy Arozarena (SEA) 0.5 +170 0.5 -225
Andrew Vaughn (MIL) 0.5 +190 0.5 -250
Jackson Chourio (MIL) 0.5 +195 0.5 -275
Christian Yelich (MIL) 0.5 +210 0.5 -285

Mariners vs Brewers Strikeout Prop Bets Today

Over Under
Brandon Woodruff (MIL) 6.5 +120 6.5 -155
George Kirby (SEA) 5.5 +125 5.5 -160

Brandon Woodruff has a strikeout rate of 47% (18 SO in 38 PAs) this month (2 games) — best in MLB among starting pitchers with at least 5 total IP; League Avg: 21% — 100th Percentile.

Brandon Woodruff has at least 6 strikeouts in each of his last eight games — Zack Wheeler has the longest active streak at 15.

Brandon Woodruff has not allowed a walk in his last 77 PAs against a RHH dating back to August 25th, 2023 — Dennis Santana has the longest active streak at 94.

Brandon Woodruff allowed a BABIP of .204 in 2023 — 2nd best in MLB among starting pitchers with at least 64 total IP; League Avg: .295 — 99th Percentile.

Mariners Starting Pitcher Stats & Trends

George Kirby’s K:BB ratio was 11.4 (91/8) against right-handed batters in the 2024 season — best among qualified SPs in MLB; League Avg: 3.8 — 100th Percentile.

George Kirby has walked 2% of right-handed batters in the 2024 season — best among qualified SPs in MLB; League Avg: 6% — 100th Percentile.

George Kirby has walked 2% of right-handed batters since last season — best in MLB among starting pitchers with at least 103 total IP; League Avg: 7% — 100th Percentile.

George Kirby walked 3% of batters in the 2024 season — best among qualified SPs in MLB; League Avg: 7% — 100th Percentile.

Brewers Keys to the Game vs. the Mariners

The Brewers are 22-3 (.880) when they’ve hit 2 or more home runs this season — 2nd best in MLB; League Avg: .715.

The Brewers are 11-1 (.917) when they’ve had 5 or more XBH this season — tied for 3rd best in MLB; League Avg: .798.

The Brewers are 36-22 (.621) after a win this season — 2nd best in MLB; League Avg: .506.

The Brewers are 26-23 (.531) on the road this season — 4th best in MLB; League Avg: .452.

Mariners Keys to the Game vs. the Brewers

The Mariners are 39-2 (.951) when leading entering the 8th inning this season — 4th best in MLB; League Avg: .906.

The Mariners are 8-35 (.186) when trailing entering the 7th inning this season — 4th best in MLB; League Avg: .123.

The Mariners are 32-4 (.889) when they’ve had 5 or more XBH since last season — 5th best in MLB; League Avg: .805.

The Mariners are 114-3 (.974) when leading entering the 9th inning since last season — tied for 4th best in MLB; League Avg: .952.

The Brewers are batting just .100 when facing the starting pitcher for the 3rd time in a game over the last 14 days — lowest in MLB; League Avg: .250.

Brewers hitters have an OBP of .337 (1,941 PA’s) on the road this season — 3rd best in MLB; League Avg: .310.

Brewers hitters have struck out in just 14% of their PA’s against LHP over the last 14 days — 2nd best in MLB; League Avg: 22%.

Brewers hitters are slugging just .469 on the first pitch of at-bats this season — 2nd lowest in MLB; League Avg: .580.

The Mariners batted just .207 when facing the starting pitcher for the 3rd time in a game in the 2024 season — lowest in MLB; League Avg: .263.

The Mariners are batting just .222 when facing the starting pitcher for the 3rd time in a game since last season — lowest in MLB; League Avg: .260.

Mariners hitters have an OBP of .346 (2,071 PA’s) on the road this season — best in MLB; League Avg: .310.

Mariners hitters are slugging .716 on the first pitch of at-bats this season — 2nd best in MLB; League Avg: .580.

Brewers pitchers have a strikeout rate of 52% with two-strikes over the last 14 days — best in MLB; League Avg: 42%.

Batters facing the Brewers pitchers have struck out on pitches in the zone 56% of the time since last season — highest in MLB; League Avg: 50%. since last season — highest in MLB; League Avg: 50%.

Batters facing the Brewers pitchers have struck out on pitches in the zone 57% of the time this season — highest in MLB; League Avg: 50%. this season — highest in MLB; League Avg: 50%.

Brewers pitchers have struck out 32% of left-handed batters they faced over the last 14 days — best in MLB; League Avg: 21%.

Mariners pitchers have allowed an OBP of just .268 (2,339 PA’s) when facing the leadoff batter in the inning since last season — best in MLB; League Avg: .308.

Mariners pitchers have walked 6% of batters when facing the leadoff batter in the inning since last season — best in MLB; League Avg: 8%.

Mariners pitchers walked 369 of 5,801 batters (6%) in the 2024 season — best in MLB; League Avg: 8%.

Mariners pitchers walked 76 of 1,441 batters (5%) when facing the leadoff batter in the inning in the 2024 season — best in MLB; League Avg: 7%.

More MLB Reading:


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Our BetMGM betting authors are experts who focus on individual game matchups & player prop bets with an emphasis on betting odds, lines & predictions.

Our BetMGM betting authors are experts who focus on individual game matchups & player prop bets with an emphasis on betting odds, lines & predictions.