Mariners vs Rockies Prediction, Odds & Player Prop Bets Today – MLB, Apr 20

(AP Photo/Gene J. Puskar)
  • The Mariners are -190 favorites vs the Rockies
  • Mariners vs Rockies Over / Under today: 10 Runs
  • Mariners / Rockies TV Channel: ROTV | RTNW | ESPN+

The Seattle Mariners (-190) visit Coors Field to take on the Colorado Rockies (+155) on Saturday, April 20, 2024. First pitch is scheduled for 8:10pm EDT in Denver, CO.

This season, the Mariners are 9-10 against the spread (ATS), while the Rockies are 9-10 ATS.

Mariners vs Rockies Starting Pitchers Today:

  • Mariners starting pitcher: Luis Castillo 0-0, 0.00 ERA
  • Rockies starting pitcher: Dakota Hudson 0-0, 0.00 ERA

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

SpreadOver / UnderMoneyline
Mariners-1.5 -120O 10 -105-190
Rockies +1.5 +100U 10 -115+155

Mariners vs Rockies Prediction for Today’s Game

Based on recent trends the model predicts the Mariners will win Saturday‘s MLB game with 51.1% 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 Mariners players for Saturday‘s game, looking at profitable historical betting trends:

Best Mariners Player Prop Bets Today:

  • Mitch Haniger has hit the Total Bases Over in 13 of his last 16 games (+10.70 Units / 47% ROI)
  • Mitch Haniger has hit the Hits Over in 14 of his last 16 games (+10.35 Units / 37% ROI)
  • Julio Rodriguez has hit the Total Bases Under in 14 of his last 17 games (+10.30 Units / 43% ROI)
  • Jorge Polanco has hit the Hits Runs and RBIs Under in 15 of his last 19 games (+9.80 Units / 38% ROI)
  • Luis Castillo has hit the Earned Runs Over in 17 of his last 25 games (+9.50 Units / 31% ROI)

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

Best Rockies Player Prop Best Bets Today:

  • Brenton Doyle has hit the Total Bases Over in 14 of his last 18 games (+10.55 Units / 45% ROI)
  • Alan Trejo has hit the Hits Under in 13 of his last 20 games (+10.10 Units / 45% ROI)
  • Austin Gomber has hit the Earned Runs Under in 19 of his last 27 games (+10.05 Units / 29% ROI)
  • Jake Cave has hit the Hits Under in 9 of his last 11 games at home (+9.90 Units / 90% ROI)
  • Cal Quantrill has hit the Strikeouts Under in 15 of his last 19 games (+9.75 Units / 33% ROI)
  • The Seattle Mariners have hit the 1st Five Innings (F5) Moneyline in 24 of their last 40 away games (+12.89 Units / 24% ROI)
  • The Seattle Mariners have covered the 1st Five Innings (F5) Run Line in 28 of their last 42 away games (+12.17 Units / 25% ROI)
  • The Seattle Mariners have hit the Game Total Over in 18 of their last 26 away games (+10.55 Units / 37% ROI)
  • The Seattle Mariners have hit the Moneyline in 27 of their last 43 away games (+9.35 Units / 16% ROI)
  • The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Over in 25 of their last 40 away games (+8.69 Units / 19% ROI)
  • The Colorado Rockies have hit the Moneyline in 34 of their last 69 games at home (+12.00 Units / 17% ROI)
  • The Colorado Rockies have covered the Run Line in 39 of their last 69 games at home (+11.30 Units / 15% ROI)
  • The Colorado Rockies have hit the Game Total Under in 78 of their last 143 games (+8.25 Units / 5% ROI)
  • The Colorado Rockies have hit the 1st Five Innings (F5) Team Total Under in 4 of their last 6 games (+1.20 Units / 16% ROI)
  • The Colorado Rockies have hit the 1st Five Innings (F5) Moneyline in 2 of their last 5 games (+0.27 Units / 5% ROI)

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 8-11 against the Run Line (-3.3 Units / -13.33% ROI).

  • 9-10 when betting on the Moneyline for -2.8 Units / -12.07% ROI
  • 6-12 when betting on the total runs Over for -7.15 Units / -34.21% ROI
  • 12-6 when betting on the total runs Under for +5.35 Units / 25.48% ROI

Rockies Against the Spread (ATS) Record

Against the spread this season, the Rockies are 9-10 against the Run Line (-2.6 Units / -12.04% ROI).

  • 4-15 when betting on the Moneyline for -8.6 Units / -45.14% ROI
  • 10-9 when betting on the total runs Over for +0.1 Units / 0.48% ROI
  • 9-10 when betting on the total runs Under for -1.9 Units / -9.13% ROI

Rockies vs Mariners Home Run Prop Bets Today

Over Under
Cal Raleigh (SEA) 0.5 +350 0.5 -450
Jorge Polanco (SEA) 0.5 +400 0.5 -550
Julio Rodriguez (SEA) 0.5 +450 0.5 -650
Mitch Haniger (SEA) 0.5 +500 0.5 -700
Mitch Garver (SEA) 0.5 +525 0.5 -750

Rockies vs Mariners Total Hits Prop Bets Today

Over Under
J.P. Crawford (SEA) 0.5 -250 0.5 +185
Elias Diaz (COL) 0.5 -250 0.5 +180
Ty France (SEA) 0.5 -250 0.5 +190
Jorge Polanco (SEA) 0.5 -250 0.5 +175
Ezequiel Tovar (COL) 0.5 -250 0.5 +190

Rockies vs Mariners RBI Prop Bets Today

Over Under
Mitch Haniger (SEA) 0.5 +115 0.5 -150
Julio Rodriguez (SEA) 0.5 +130 0.5 -175
Cal Raleigh (SEA) 0.5 +130 0.5 -165
Jorge Polanco (SEA) 0.5 +130 0.5 -165
Ty France (SEA) 0.5 +145 0.5 -190

Rockies vs Mariners Strikeout Prop Bets Today

Over Under

Opponents are hitting .337 (32-for-95) against Luis Castillo this season — tied for highest among in MLB; League Avg: .227 — fourth Percentile.

Opponents are hitting .337 (32-for-95) against Luis Castillo this season — tied for 2nd highest among qualified SPs in MLB; League Avg: .234 — fourth Percentile.

Opponents are hitting .276 (16-for-58) against Luis Castillo with two-strikes this season — 3rd highest among qualified SPs in MLB; League Avg: .161 — third Percentile.

Left-handed batters are hitting .429 (21-for-49) against Luis Castillo this season — highest among qualified SPs in MLB; League Avg: .236 — first Percentile.

Rockies Starting Pitcher Stats & Trends

Dakota Hudson has a strikeout rate of just 13% (54 SO in 428 PAs) when going through the lineup the first time in a game since the 2022 season — lowest in MLB among starting pitchers with at least 136 total IP; League Avg: 25% — 0 Percentile.

Opponents are hitting .438 (7-for-16) against Dakota Hudson when going through the lineup the first time in a game — 3rd highest in MLB over the last two weeks; League Avg: .234 — third Percentile.

Dakota Hudson has induced opposing hitters to ground into 16 double plays in 76 opportunities (21%) since last season — best in MLB among starting pitchers with at least 72 total IP; League Avg: 11% — 100th Percentile.

Dakota Hudson has a strikeout rate of just 13% (134 SO in 1,023 PAs) since the 2022 season — lowest in MLB among starting pitchers with at least 136 total IP; League Avg: 23% — 0 Percentile.

Mariners Keys to the Game vs. the Rockies

The Mariners are 146-6 (.961) when leading entering the 8th inning since the 2022 season — best in MLB; League Avg: .906.

The Mariners are 46-6 (.885) when they’ve had 5 or more XBH since the 2022 season — best in MLB; League Avg: .795.

The Mariners are 153-3 (.981) when leading entering the 9th inning since the 2022 season — 2nd best in MLB; League Avg: .951.

The Mariners are 52-37 (.584) after a road win since the 2022 season — 3rd best in MLB; League Avg: .493.

Rockies Keys to the Game vs. the Mariners

The Rockies are just 0-1 (.000) after a win as favorites since the 2023 season — lowest in MLB; League Avg: .577.

The Rockies are just 45-22 (.672) when leading entering the 7th inning since the 2023 season — lowest in MLB; League Avg: .855.

The Rockies are just 49-14 (.778) when leading entering the 8th inning since the 2023 season — lowest in MLB; League Avg: .897.

The Rockies are just 40-27 (.597) when they’ve had 5 or more XBH since the 2022 season — lowest in MLB; League Avg: .795.

Mariners hitters are slugging just .149 with two-strikes this season — lowest in MLB; League Avg: .249.

The Mariners are batting just .115 with two-strikes this season — 2nd lowest in MLB; League Avg: .165.

The Mariners are batting just .101 with two-strikes over the last 14 days — 2nd lowest in MLB; League Avg: .163.

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

The Rockies have an average HR distance of 411.3 feet since the 2022 season — best in MLB; League Avg: 398.6.

The Rockies have won just 50% of games in which they have scored in at least three different innings on the road since the 2022 season — lowest in MLB; League Avg: 72%.

The Rockies have won just 46% of road games in which they have scored three or more runs in an inning since the 2022 season — lowest in MLB; League Avg: 74%.

The Rockies won just 47% of road games in which they have scored three or more runs in an inning in the 2023 season — lowest in MLB; League Avg: 73%.

Mariners pitchers have walked 42 of 692 batters (6%) this season — best in MLB; League Avg: 9%.

Opponents have a groundball rate of just 38% against Mariners pitchers this season — 3rd lowest in MLB; League Avg: 43%.

Mariners pitchers have walked 910 of 12,684 batters (7%) since the 2022 season — 3rd best in MLB; League Avg: 8%.

Mariners pitchers have walked 463 of 6,698 batters (7%) since last season — 2nd best in MLB; League Avg: 9%.

Opponents have a miss rate of just 21% against Rockies pitchers since last season — lowest in MLB; League Avg: 26%.

Rockies pitchers have a strikeout rate of just 18% since last season — lowest in MLB; League Avg: 23%.

Opponents have a miss rate of just 22% against Rockies pitchers this season — 2nd lowest in MLB; League Avg: 25%.

Rockies pitchers have an ERA of 6.03 (789.0 IP) at home since last season — highest in MLB; League Avg: 4.21.

Rockies vs. Mariners Injuries Tonight That May Affect Prop Bets 

  • German Marquez (Colorado Rockies): Elbow, 60-Day IL
  • Lucas Gilbreath (Colorado Rockies): Elbow, 15-Day IL
  • Antonio Senzatela (Colorado Rockies): Elbow, 60-Day IL
  • Daniel Bard (Colorado Rockies): Knee, 15-Day IL
  • 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

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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.