Reds vs Mariners Prediction, Odds & Player Prop Bets Today – MLB, Apr 15

Seattle Mariners' Julio Rodriguez watches his home run during the eighth inning of a baseball game against the San Diego Padres, Tuesday, June 6, 2023, in San Diego. (AP Photo/Gregory Bull)
(AP Photo/Gregory Bull)
  • The Mariners are -150 favorites vs the Reds
  • Reds vs Mariners Over / Under today: 7.5 Runs
  • Reds / Mariners TV Channel: BSOH | RTNW

The Cincinnati Reds (+125) visit T-Mobile Park to take on the Seattle Mariners (-150) on Monday, April 15, 2024. First pitch is scheduled for 9:42pm EDT in Seattle, WA.

This season, the Reds are 8-6 against the spread (ATS), while the Mariners are 5-9 ATS.

Reds vs Mariners Starting Pitchers Today:

  • Reds starting pitcher: Frankie Montas 2-1, 2.16 ERA
  • Mariners starting pitcher: George Kirby 1-2, 6.76 ERA

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

SpreadOver / UnderMoneyline
Reds+1.5 -165O 7.5 -120+125
Mariners -1.5 +140U 7.5 +100-150

Reds vs Mariners Prediction for Today’s Game

Based on recent trends the model predicts the Mariners will win Monday‘s MLB game with 55.1% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.


Bet now on Reds vs Mariners and all games with BetMGM


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

Best Reds Player Prop Bets Today:

  • player high – away 

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:

  • player  high – home
  • team high – away
  • team high – home

Reds Against the Spread (ATS) Record

Against the spread this season, the Reds are 7-7 against the Run Line (+0 Units / 0% ROI).

  • 8-6 when betting on the Moneyline for +1.05 Units / 5.74% ROI
  • 10-4 when betting on the total runs Over for +5.5 Units / 35.83% ROI
  • 4-10 when betting on the total runs Under for -7.15 Units / -46.28% ROI

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 5-9 against the Run Line (-5.65 Units / -29.27% ROI).

  • 6-8 when betting on the Moneyline for -3.4 Units / -20.36% ROI
  • 5-8 when betting on the total runs Over for -3.65 Units / -23.93% ROI
  • 8-5 when betting on the total runs Under for +2.4 Units / 15.38% ROI

Mariners vs Reds Home Run Prop Bets Today

Over Under
Cal Raleigh (SEA) 0.5 +350 0.5 -450
Julio Rodriguez (SEA) 0.5 +400 0.5 -550
Jorge Polanco (SEA) 0.5 +400 0.5 -550
Mitch Haniger (SEA) 0.5 +450 0.5 -650
Luke Raley (SEA) 0.5 +450 0.5 -650

Mariners vs Reds Total Hits Prop Bets Today

Over Under
Julio Rodriguez (SEA) 0.5 -250 0.5 +185
Jonathan India (CIN) 0.5 -200 0.5 +150
Ty France (SEA) 0.5 -200 0.5 +150
Spencer Steer (CIN) 0.5 -185 0.5 +140
Christian Encarnacion-Strand (CIN) 0.5 -175 0.5 +135

Mariners vs Reds RBI Prop Bets Today

Over Under
Mitch Haniger (SEA) 0.5 +170 0.5 -225
Julio Rodriguez (SEA) 0.5 +175 0.5 -250
Jorge Polanco (SEA) 0.5 +175 0.5 -250
Ty France (SEA) 0.5 +185 0.5 -250
Cal Raleigh (SEA) 0.5 +185 0.5 -250

Mariners vs Reds Strikeout Prop Bets Today

Over Under
George Kirby (SEA) 6.5 -150 6.5 +110
Frankie Montas (CIN) 5.5 -105 5.5 -120

Frankie Montas has a strike rate of 79% (45/57) when he’s behind in the count this season — 2nd highest among in NL; League Avg: 69% — 97th Percentile.

Opponents have a groundball rate of just 33% (7/21) against Frankie Montas in two-strike counts this season — tied for 4th lowest among in NL; League Avg: 46% — 10th Percentile.

Opponents are hitting .235 (8-for-34) against Frankie Montas with two-strikes this season — 7th highest among in NL; League Avg: .159 — 12th Percentile.

Opponents have a first pitch chase rate of 25% (90/359) against Frankie Montas since the 2022 season — highest in MLB among starting pitchers with at least 135 total IP; League Avg: 16% — 100th Percentile.

Mariners Starting Pitcher Stats & Trends

Opponents are hitting .391 (9-for-23) against George Kirby’s non-fastballs this season — tied for 2nd highest among in AL; League Avg: .214 — sixth Percentile.

George Kirby had a strike rate of 71% (2,002/2,825) in the 2023 season — highest among qualified SPs in MLB; League Avg: 65% — 100th Percentile.

George Kirby has a strike rate of 72% (186/258) this season — 2nd highest among in AL; League Avg: 65% — 98th Percentile.

George Kirby has a strike rate of 74% (92/125) against right-handed batters this season — highest among in AL; League Avg: 66% — 100th Percentile.

Reds Keys to the Game vs. the Mariners

The Reds are just 41-47 (.466) when they’ve scored in the first inning since the 2022 season — lowest in MLB; League Avg: .638.

The Reds were just 24-12 (.667) when they had 5 or more XBH in 2023 — 3rd lowest in MLB; League Avg: .790.

The Reds are 26-13 (.667) after a win as favorites since the 2022 season — tied for best in MLB; League Avg: .590.

The Reds are 14-69 (.169) when trailing entering the 8th inning since the 2023 season — 3rd best in MLB; League Avg: .101.

Mariners Keys to the Game vs. the Reds

The Mariners are 85-13 (.867) when they’ve had 10 or more hits since the 2022 season — best in MLB; League Avg: .730.

The Mariners are 13-11 (.520) after a win as underdogs since the 2023 season — tied for 4th best in MLB; League Avg: .425.

The Mariners are 81-2 (.976) when leading entering the 9th inning since the 2023 season — tied for 4th best in MLB; League Avg: .949.

The Mariners are 10-136 (.068) when trailing entering the 9th inning since the 2022 season — tied for 5th best in MLB; League Avg: .048.

Reds hitters have put just 25% of their swings in play on pitches 95 mph or greater this season — lowest in MLB; League Avg: 33%.

Reds hitters have 23 extra-base hits out of 40 total hits (57%) with two-strikes this season — best in MLB; League Avg: 29%.

Reds hitters have 37 extra-base hits out of 80 total hits (46%) against RHP this season — best in MLB; League Avg: 34%.

Reds hitters have grounded into 28 double plays in 205 opportunities (14%) in close and late situations since last season — 2nd highest in MLB; League Avg: 9%.

Mariners hitters are slugging just .154 with two-strikes this season — lowest in MLB; League Avg: .249.

Mariners hitters put just 33% of their swings in play against LHP in the 2023 season — lowest in MLB; League Avg: 37%.

Mariners hitters have 132 strikeouts in 424 PA’s (31%) against RHP this season — highest in MLB; League Avg: 23%.

Mariners hitters have an OBP of just .264 (424 PA’s) against RHP this season — lowest in MLB; League Avg: .319.

Opponents have a groundball rate of just 39% against Reds pitchers since last season — 2nd lowest in MLB; League Avg: 43%.

Opponents have a groundball rate of just 40% against Reds pitchers since the 2022 season — tied for lowest in MLB; League Avg: 43%.

Reds pitchers have walked 287 of 3,005 batters (10%) when facing the leadoff batter in the inning since the 2022 season — tied for highest in MLB; League Avg: 8%.

Opponents have a groundball batting average of .298 against Reds pitchers with runners on base since the 2022 season — highest in MLB; League Avg: .254.

Mariners pitchers have walked 458 of 6,602 batters (7%) since last season — 2nd best in MLB; League Avg: 9%.

Mariners pitchers walked 421 of 6,006 batters (7%) in the 2023 season — 2nd best in MLB; League Avg: 9%.

Mariners pitchers have walked 9 of 214 batters (4%) over the past seven days (6 games) — best in MLB; League Avg: 9%.

Mariners pitchers walked 97 of 1,455 batters (7%) when facing the leadoff batter in the inning in the 2023 season — 3rd best in MLB; League Avg: 8%.

Mariners vs. Reds Injuries Tonight That May Affect Prop Bets 

  • Jackson Kowar (Seattle Mariners): Elbow, 60-Day IL
  • Mitch Garver (Seattle Mariners): Back, Day-To-Day
  • Sam Haggerty (Seattle Mariners): Undisclosed, 10-Day IL
  • Gregory Santos (Seattle Mariners): Lat, 15-Day IL
  • Eduard Bazardo (Seattle Mariners): Shoulder, 15-Day IL
  • Bryan Woo (Seattle Mariners): Elbow, 15-Day IL
  • Matt Brash (Seattle Mariners): Elbow, 15-Day IL
  • Austin Wynns (Cincinnati Reds): Shoulder, Day-To-Day
  • Sam Moll (Cincinnati Reds): Shoulder, 15-Day IL
  • Noelvi Marte (Cincinnati Reds): Suspension, Suspension
  • Matt McLain (Cincinnati Reds): Shoulder, 60-Day IL
  • Joey Votto (Cincinnati Reds): Ankle, Out
  • Nick Lodolo (Cincinnati Reds): Calf, 15-Day IL
  • TJ Friedl (Cincinnati Reds): Wrist, 10-Day IL
  • Reiver Sanmartin (Cincinnati Reds): Elbow, Out
  • Alex Young (Cincinnati Reds): Back, 15-Day IL
  • Ian Gibaut (Cincinnati Reds): Forearm, 15-Day IL
  • Brandon Williamson (Cincinnati Reds): Shoulder, 15-Day IL
  • Connor Overton (Cincinnati Reds): Elbow, Out

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Our BetMGM editors and authors are sports experts with a wealth of knowledge of the sports industry at all levels. Their coverage includes sports news, previews and predictions, fun facts, and betting.