Reds vs Mariners Prediction, Odds & Player Prop Bets Today – MLB, Jul 22

Seattle Mariners left fielder Randy Arozarena throws to the infield during the third inning of a spring training baseball game against the Colorado Rockies Sunday, March 2, 2025, in Scottsdale, Ariz.
(AP Photo/Ross D. Franklin)
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  • The Mariners are -155 favorites vs the Reds
  • Reds vs Mariners Over / Under today: 8 Runs
  • Reds / Mariners TV Channel: MRTV | RDTV

The Cincinnati Reds (+125) visit T-Mobile Park to take on the Seattle Mariners (-155) on July 22, 2026. First pitch is scheduled for 3:40 pm in Seattle, WA.

This season, the Reds are 46-54 against the spread (ATS), while the Mariners are 41-61 ATS.

Reds vs Mariners Starting Pitchers Today:

  • Reds starting pitcher: Brady Singer 4-9, 4.57 ERA
  • Mariners starting pitcher: Emerson Hancock 6-4, 3.18 ERA

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

SpreadOver / UnderMoneyline
Reds+1.5 -165O 8 -110+125
Mariners -1.5 +135U 8 -110-155

Reds vs Mariners Prediction for Today’s Game

Based on recent trends the model predicts the Mariners will win Wednesday‘s MLB game with 57.1% 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 Reds players for Wednesday‘s game, looking at profitable historical betting trends:

Best Reds Player Prop Bets Today:

  • Nate Lowe has hit the Home Runs Over in 3 of his last 4 games (+13.10 Units / 328% ROI)
  • TJ Friedl has hit the Hits Under in 17 of his last 25 games (+11.60 Units / 44% ROI)
  • Noelvi Marte has hit the Hits Runs and RBIs Under in 16 of his last 20 games (+10.55 Units / 37% ROI)
  • JJ Bleday has hit the Singles Over in 13 of his last 20 games (+10.15 Units / 50% ROI)
  • Nate Lowe has hit the Total Bases Over in 18 of his last 25 away games (+9.90 Units / 28% ROI)

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

Best Mariners Player Prop Best Bets Today:

  • Cole Young has hit the Home Runs Over in 3 of his last 8 games (+18.00 Units / 225% ROI)
  • Luke Raley has hit the Runs Under in 22 of his last 25 games (+17.55 Units / 37% ROI)
  • Cal Raleigh has hit the Total Bases Under in 17 of his last 20 games at home (+14.90 Units / 60% ROI)
  • Colt Emerson has hit the Hits Runs and RBIs Under in 18 of his last 25 games (+11.90 Units / 39% ROI)
  • Josh Naylor has hit the Singles Over in 18 of his last 25 games (+10.00 Units / 34% ROI)
  • The Cincinnati Reds have hit the Team Total Under in 29 of their last 45 games (+11.30 Units / 21% ROI)
  • The Cincinnati Reds have hit the 1st Five Innings (F5) Team Total Over in 20 of their last 30 away games (+9.55 Units / 26% ROI)
  • The Cincinnati Reds have hit the Game Total Over in 28 of their last 45 away games (+9.25 Units / 19% ROI)
  • The Cincinnati Reds have covered the 1st Five Innings (F5) Run Line in 22 of their last 35 games (+7.80 Units / 19% ROI)
  • The Cincinnati Reds have hit the 1st Five Innings (F5) Moneyline in 14 of their last 30 away games (+6.85 Units / 20% ROI)
  • The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 21 of their last 30 games (+10.95 Units / 30% ROI)
  • The Seattle Mariners have hit the Team Total Under in 26 of their last 40 games (+10.75 Units / 23% ROI)
  • The Seattle Mariners have hit the Moneyline in 17 of their last 24 games at home (+7.90 Units / 22% ROI)
  • The Seattle Mariners have hit the Game Total Over in 21 of their last 40 games (+4.65 Units / 10% ROI)
  • The Seattle Mariners have covered the Run Line in 10 of their last 19 games at home (+3.55 Units / 17% ROI)

Reds Against the Spread (ATS) Record

Against the spread this season, the Reds are 54-45 against the Run Line (-3.9 Units / -2.77% ROI).

  • 46-54 when betting on the Moneyline for -7.9 Units / -7.07% ROI
  • 56-43 when betting on the total runs Over for +8.65 Units / 7.82% ROI
  • 43-56 when betting on the total runs Under for -18 Units / -16.45% ROI

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 41-61 against the Run Line (-11.6 Units / -10.44% ROI).

  • 51-51 when betting on the Moneyline for -14.7 Units / -10.54% ROI
  • 49-47 when betting on the total runs Over for -2.5 Units / -2.22% ROI
  • 47-49 when betting on the total runs Under for -6.6 Units / -5.9% ROI

Mariners vs Reds Home Run Prop Bets Today

Yes
Cal Raleigh +270
Dominic Canzone +340
Eugenio Suarez +340
Luke Raley +350
Julio Rodriguez +350

Mariners vs Reds Total Hits Prop Bets Today

Over Under
Randy Arozarena 0.5 -235 0.5 +170
Elly De La Cruz 0.5 -235 0.5 +175
Dominic Canzone 0.5 -220 0.5 +165
Josh Naylor 0.5 -220 0.5 +160
Sal Stewart 0.5 -220 0.5 +160

Mariners vs Reds Strikeout Prop Bets Today

Over Under
Colt Emerson 0.5 -275 0.5 +195
Nathaniel Lowe 0.5 -235 0.5 +175
Noelvi Marte 0.5 -225 0.5 +165
Sal Stewart 0.5 -225 0.5 +165
JJ Bleday 0.5 -225 0.5 +165

Reds Keys to the Game vs. the Mariners

The Reds are just 3-15 (.167) when tied entering the 7th inning this season — lowest in MLB; League Avg: .500.

The Reds are just 8-43 (.157) when allowing 5 or more runs this season — 5th lowest in MLB; League Avg: .207.

The Reds are just 6-11 (.353) when tied entering the 8th inning this season — 5th lowest in MLB; League Avg: .500.

The Reds are just 5-28 (.152) when allowing 10 or more hits this season — 5th lowest in MLB; League Avg: .247.

Mariners Keys to the Game vs. the Reds

The Mariners are just 15-27 (.357) vs bottom 10 scoring offenses this season Today, they face the Reds (23rd in runs scored).

The Mariners are just 1-45 (.022) when trailing entering the 9th inning this season — 3rd lowest in MLB; League Avg: .053.

The Mariners are just 6-35 (.146) when allowing 5 or more runs this season — 4th lowest in MLB; League Avg: .207.

The Mariners are just 1-41 (.024) when trailing entering the 8th inning this season — 3rd lowest in MLB; League Avg: .097.

The Reds are batting just .217 with runners on base this season — lowest in MLB.

The Reds are batting just .212 with two outs this season — lowest in MLB.

The Reds are batting just .118 on pitches out of the zone this season — lowest in MLB.

Reds hitters have an OBP of just .300 (1,650 PA’s) with runners on base this season — lowest in MLB.

The Mariners are batting just .216 against LHP this season — 2nd lowest in MLB.

Mariners hitters are slugging just .334 against LHP this season — lowest in MLB.

Mariners hitters have an OPS of just .635 (1,078 PA’s) against LHP this season — lowest in MLB.

Mariners hitters are slugging just .378 this season — 2nd lowest in MLB.

Reds pitchers have walked 11% of batters this season — 2nd highest in MLB.

Reds pitchers have a first-pitch strike rate of just 58% this season — lowest in MLB.

Reds pitchers have walked 10% of batters when facing the leadoff batter in the inning this season — 5th highest in MLB.

The Reds pitchers have allowed their opponents to score first in 58% of their games this season — 4th highest in MLB.

Mariners pitchers have walked 7% of batters this season — best in MLB.

Mariners pitchers have a first-pitch strike rate of 66% this season — highest in MLB.

Mariners pitchers have thrown at least two strikes in their first three pitches to 69% of opposing batters this season — highest in MLB.

Mariners pitchers have walked 6% of batters when facing the leadoff batter in the inning this season — best in MLB.

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.