Rangers vs Mariners Prediction, Odds & Player Prop Bets Today – MLB, Apr 12

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)
  • The Mariners are -150 favorites vs the Rangers
  • Rangers vs Mariners Over / Under today: 7 Runs
  • Rangers / Mariners TV Channel: RASN | RTNW

The Texas Rangers (+125) visit T-Mobile Park to take on the Seattle Mariners (-150) on Saturday, April 12, 2025. First pitch is scheduled for 9:40pm EDT in Seattle, WA.

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

Rangers vs Mariners Starting Pitchers Today:

  • Rangers starting pitcher: Kumar Rocker 0-1, 7.88 ERA
  • Mariners starting pitcher: Bryan Woo 1-0, 3.75 ERA

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

SpreadOver / UnderMoneyline
Rangers+1.5 -190O 7 -110+125
Mariners -1.5 +155U 7 -110-150

Rangers vs Mariners Prediction for Today’s Game

Based on recent trends the model predicts the Mariners will win Saturday‘s MLB game with 56.6% 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 Rangers players for Saturday‘s game, looking at profitable historical betting trends:

Best Rangers Player Prop Bets Today:

  • Joc Pederson has hit the RBIs Under in his last 10 games (+10.00 Units / 42% ROI)
  • Joc Pederson has hit the Hits Under in 8 of his last 10 games (+7.65 Units / 76% ROI)
  • Joc Pederson has hit the Hits Runs and RBIs Under in 9 of his last 10 games (+7.55 Units / 55% ROI)
  • Joc Pederson has hit the Total Bases Under in 8 of his last 10 games (+7.50 Units / 75% ROI)
  • Joc Pederson has hit the Runs Under in 9 of his last 10 games (+7.45 Units / 46% ROI)

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

Best Mariners Player Prop Best Bets Today:

  • Jorge Polanco has hit the Home Runs Over in 3 of his last 8 games (+11.40 Units / 142% ROI)
  • Jorge Polanco has hit the Singles Over in 7 of his last 8 games (+10.25 Units / 128% ROI)
  • Julio Rodriguez has hit the Hits Under in 14 of his last 25 games at home (+9.60 Units / 33% ROI)
  • Julio Rodriguez has hit the Total Bases Under in 11 of his last 15 games at home (+6.40 Units / 31% ROI)
  • Cal Raleigh has hit the Hits Runs and RBIs Under in 8 of his last 10 games at home (+5.80 Units / 45% ROI)
  • The Texas Rangers have hit the 1st Five Innings (F5) Team Total Under in 92 of their last 161 games (+12.00 Units / 6% ROI)
  • The Texas Rangers have hit the Moneyline in 9 of their last 13 games (+5.10 Units / 32% ROI)
  • The Texas Rangers have hit the 1st Five Innings (F5) Moneyline in 8 of their last 13 games (+3.95 Units / 23% ROI)
  • The Texas Rangers have hit the Game Total Over in 5 of their last 6 games (+3.90 Units / 60% ROI)
  • The Texas Rangers have covered the 1st Five Innings (F5) Run Line in 9 of their last 14 games (+3.70 Units / 23% ROI)
  • The Seattle Mariners have hit the Game Total Under in 49 of their last 85 games at home (+15.10 Units / 16% ROI)
  • The Seattle Mariners have hit the Moneyline in 52 of their last 85 games at home (+8.20 Units / 7% ROI)
  • The Seattle Mariners have hit the Team Total Over in 6 of their last 8 games (+4.00 Units / 42% ROI)
  • The Seattle Mariners have covered the Run Line in 40 of their last 85 games at home (+3.00 Units / 3% ROI)
  • The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 44 of their last 85 games at home (+0.45 Units / 0% ROI)

Rangers Against the Spread (ATS) Record

Against the spread this season, the Rangers are 6-8 against the Run Line (-3.6 Units / -18.9% ROI).

  • 9-5 when betting on the Moneyline for +4.1 Units / 24.05% ROI
  • 6-8 when betting on the total runs Over for -2.7 Units / -17.7% ROI
  • 8-6 when betting on the total runs Under for +1.35 Units / 8.68% ROI

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 6-8 against the Run Line (-2.7 Units / -14.44% ROI).

  • 6-8 when betting on the Moneyline for -4.05 Units / -21.89% ROI
  • 5-7 when betting on the total runs Over for -2.7 Units / -17.7% ROI
  • 7-5 when betting on the total runs Under for +1.4 Units / 8.97% ROI

Mariners vs Rangers Home Run Prop Bets Today

Over Under
Corey Seager (TEX) 0.5 +400 0.5 -550
Cal Raleigh (SEA) 0.5 +450 0.5 -625
Joc Pederson (TEX) 0.5 +500 0.5 -700
Julio Rodriguez (SEA) 0.5 +525 0.5 -750
Adolis Garcia (TEX) 0.5 +550 0.5 -800

Mariners vs Rangers Total Hits Prop Bets Today

Over Under
Julio Rodriguez (SEA) 0.5 -235 0.5 +180
Corey Seager (TEX) 0.5 -210 0.5 +155
Marcus Semien (TEX) 0.5 -200 0.5 +150
Josh Jung (TEX) 0.5 -160 0.5 +125
Jorge Polanco (SEA) 0.5 -160 0.5 +125

Mariners vs Rangers RBI Prop Bets Today

Over Under
Julio Rodriguez (SEA) 0.5 +180 0.5 -250
Cal Raleigh (SEA) 0.5 +185 0.5 -250
Randy Arozarena (SEA) 0.5 +195 0.5 -275
Corey Seager (TEX) 0.5 +195 0.5 -275
Adolis Garcia (TEX) 0.5 +200 0.5 -275

Mariners vs Rangers Strikeout Prop Bets Today

Over Under
Bryan Woo (SEA) 5.5 -160 5.5 +125
Kumar Rocker (TEX) 4.5 -125 4.5 -105

Left-handed batters are hitting .455 (10-for-22) against Kumar Rocker this season — 3rd highest in MLB among starting pitchers with at least 5 total IP; League Avg: .238 — second Percentile.

Kumar Rocker has allowed an OBP of .478 (23 PA’s) vs left-handed batters this season — 2nd highest in MLB among starting pitchers with at least 5 total IP; League Avg: .316 — first Percentile.

Kumar Rocker has struck out just 4% (1/23) of left-handed batters he faced this season — 3rd lowest in MLB among starting pitchers with at least 5 total IP; League Avg: 23% — second Percentile.

Kumar Rocker has a strikeout rate of just 10% (4 SO in 38 PAs) this season — 10th lowest in MLB among starting pitchers with at least 5 total IP; League Avg: 22% — sixth Percentile.

Mariners Starting Pitcher Stats & Trends

Bryan Woo has walked 3 of 208 batters (1%) when going through the lineup the second time in a game since last season — best in MLB among starting pitchers with at least 69 total IP; League Avg: 7% — 100th Percentile.

Bryan Woo has allowed a just .120 SLG vs right-handed batters (second best)– 98th Percentile and .722 vs left-handed batters over the last two weeks (tied for third worst among qualified SPs)– fifth Percentile.

Bryan Woo has allowed an OPS of just .488 (378 PA’s) when going through the lineup the first time in a game since the 2023 season — best in MLB among starting pitchers with at least 134 total IP; League Avg: .699 — 100th Percentile.

Bryan Woo had a strike rate of 71% (1,219/1,716) in the 2024 season — highest in MLB among starting pitchers with at least 64 total IP; League Avg: 65% — 100th Percentile.

Rangers Keys to the Game vs. the Mariners

The Rangers are 9-0 (1.000) when allowing 4 or fewer runs this season — tied for best in MLB; League Avg: .709.

The Rangers are 9-5 (.643) this season — 5th best in MLB; League Avg: .500.

The Rangers were just 10-59 (.145) when they allowed 5 or more runs in the 2024 season — 5th lowest in MLB; League Avg: .196.

The Rangers were just 10-42 (.192) when allowing 10 or more hits in the 2024 season — 5th lowest in MLB; League Avg: .250.

Mariners Keys to the Game vs. the Rangers

The Mariners are 77-16 (.828) when they’ve had 10 or more hits since the 2023 season — 3rd best in MLB; League Avg: .740.

The Mariners were 49-32 (.605) at home in the 2024 season — 4th best in MLB; League Avg: .521.

The Mariners are 60-7 (.896) when scoring 5 or more runs since last season — 2nd best in MLB; League Avg: .805.

The Mariners were 58-5 (.921) when they scored 5 or more runs in the 2024 season — best in MLB; League Avg: .804.

Rangers hitters had an OPS of .844 (3,096 PA’s) at home in 2023 — 2nd best in MLB; League Avg: .746.

Rangers hitters slugged .495 at home in 2023 — 2nd best in MLB; League Avg: .422.

The Rangers are batting just .295 in hitter’s counts since last season — lowest in MLB; League Avg: .337.

Rangers hitters have an OBP of just .264 (372 PA’s) against RHP this season — lowest in MLB; League Avg: .316.

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 .225 when facing the starting pitcher for the 3rd time in a game since the 2023 season — lowest in MLB; League Avg: .264.

The Mariners are batting just .171 at home this season — lowest in MLB; League Avg: .249.

The Mariners are batting just .140 with two-strikes since last season — lowest in MLB; League Avg: .168.

Rangers pitchers have walked 97 of 1,552 batters (6%) when facing the leadoff batter in the inning since last season — 3rd best in MLB; League Avg: 8%.

Rangers pitchers had an ERA of 5.18 (689.2 IP) on the road in the 2024 season — 2nd highest in MLB; League Avg: 4.18.

Rangers pitchers have walked 208 of 2,995 batters (7%) when facing the leadoff batter in the inning since the 2023 season — tied for 4th best in MLB; League Avg: 8%.

The longest HR allowed by the Rangers pitchers in the 2024 season traveled 510.9 feet — — 3rd longest in MLB; League Avg: 470.4

Mariners pitchers have walked 421 of 6,357 batters (7%) 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 have allowed an OBP of just .252 (1,570 PA’s) when facing the leadoff batter in the inning since last season — best in MLB; League Avg: .305.

Mariners pitchers have walked 182 of 3,026 batters (6%) when facing the leadoff batter in the inning since the 2023 season — best in MLB; League Avg: 8%.

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.