- The Diamondbacks are -170 favorites vs the Mariners
- Mariners vs Diamondbacks Over / Under today: 9.5 Runs
- Mariners / Diamondbacks TV Channel: DBTV | FS1 | RTNW
The Seattle Mariners (+140) visit Chase Field to take on the Arizona Diamondbacks (-170) on Monday, June 9, 2025. First pitch is scheduled for 9:40pm EDT in Phoenix, AZ.
This season, the Mariners are 33-31 against the spread (ATS), while the Diamondbacks are 29-36 ATS.
Mariners vs Diamondbacks Starting Pitchers Today:
- Mariners starting pitcher: Emerson Hancock 2-2, 5.26 ERA
- Diamondbacks starting pitcher: Merrill Kelly 6-2, 3.44 ERA
Mariners vs. Diamondbacks Odds, Run Line, Over/Under & Moneyline
| Spread | Over / Under | Moneyline | |
| Mariners | +1.5 -150 | O 9.5 -118 | +140 |
| Diamondbacks | -1.5 +125 | U 9.5 -102 | -170 |
Mariners vs Diamondbacks Prediction for Today’s Game
Based on recent trends the model predicts the Diamondbacks will win Monday‘s MLB game with 59.4% 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 Monday‘s game, looking at profitable historical betting trends:
Best Mariners Player Prop Bets Today:
- Miles Mastrobuoni has hit the Home Runs Over in 1 of his last 4 away games (+12.00 Units / 300% ROI)
- Julio Rodriguez has hit the Hits Over in 14 of his last 20 away games (+11.85 Units / 38% ROI)
- Jorge Polanco has hit the Total Bases Under in 13 of his last 15 games (+10.95 Units / 51% ROI)
- Cal Raleigh has hit the RBIs Over in 14 of his last 25 games (+8.55 Units / 34% ROI)
- Randy Arozarena has hit the Runs Under in 15 of his last 20 games (+7.15 Units / 23% ROI)
And here are some favorite MLB player prop bets for Diamondbacks players for Monday‘s game, looking at profitable historical betting trends:
Best Diamondbacks Player Prop Best Bets Today:
- Lourdes Gurriel Jr. has hit the Hits Over in 16 of his last 20 games (+12.65 Units / 33% ROI)
- Geraldo Perdomo has hit the Total Bases Under in 11 of his last 15 games (+8.10 Units / 41% ROI)
- Lourdes Gurriel Jr. has hit the Singles Over in 12 of his last 15 games (+8.05 Units / 42% ROI)
- Josh Naylor has hit the Home Runs Over in 2 of his last 6 games at home (+7.90 Units / 132% ROI)
- Eugenio Suarez has hit the Hits Runs and RBIs Over in 17 of his last 25 games (+7.50 Units / 25% ROI)
Mariners Best Bets Today:
- The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Over in 34 of their last 58 games (+7.90 Units / 11% ROI)
- The Seattle Mariners have hit the Game Total Over in 30 of their last 52 games (+6.90 Units / 12% ROI)
- The Seattle Mariners have hit the Moneyline in 17 of their last 27 away games (+6.60 Units / 20% ROI)
- The Seattle Mariners have hit the Team Total Under in 10 of their last 14 games (+5.60 Units / 36% ROI)
- The Seattle Mariners have covered the 1st Five Innings (F5) Run Line in 3 of their last 5 games (+0.90 Units / 15% ROI)
Diamondbacks Best Bets Today:
- The Arizona Diamondbacks have hit the 1st Five Innings (F5) Moneyline in 27 of their last 49 games (+12.45 Units / 18% ROI)
- The Arizona Diamondbacks have covered the 1st Five Innings (F5) Run Line in 31 of their last 49 games (+11.85 Units / 20% ROI)
- The Arizona Diamondbacks have hit the Game Total Under in 21 of their last 36 games (+5.90 Units / 15% ROI)
- The Arizona Diamondbacks have hit the Team Total Under in 11 of their last 17 games (+3.60 Units / 17% ROI)
- The Arizona Diamondbacks have hit the 1st Five Innings (F5) Team Total Over in 13 of their last 22 games at home (+3.04 Units / 12% ROI)
Mariners Against the Spread (ATS) Record
Against the spread this season, the Mariners are 29-35 against the Run Line (-5.7 Units / -7.26% ROI).
- 33-31 when betting on the Moneyline for -7.05 Units / -8.16% ROI
- 33-28 when betting on the total runs Over for +2.2 Units / 3.14% ROI
- 28-33 when betting on the total runs Under for -8.67 Units / -12.23% ROI
Diamondbacks Against the Spread (ATS) Record
Against the spread this season, the Diamondbacks are 29-36 against the Run Line (-12.21 Units / -14.66% ROI).
- 31-34 when betting on the Moneyline for -11.35 Units / -12.75% ROI
- 30-31 when betting on the total runs Over for -4.4 Units / -6.12% ROI
- 31-30 when betting on the total runs Under for -1.95 Units / -2.74% ROI
Diamondbacks vs Mariners Home Run Prop Bets Today
| Over | Under | |
|---|---|---|
| Cal Raleigh (SEA) | 0.5 +300 | 0.5 -375 |
| Corbin Carroll (ARI) | 0.5 +350 | 0.5 -450 |
| Eugenio Suarez (ARI) | 0.5 +425 | 0.5 -600 |
| Ketel Marte (ARI) | 0.5 +500 | 0.5 -700 |
| Jorge Polanco (SEA) | 0.5 +575 | 0.5 -900 |
Diamondbacks vs Mariners Total Hits Prop Bets Today
| Over | Under | |
|---|---|---|
| Lourdes Gurriel Jr (ARI) | 0.5 -250 | 0.5 +190 |
| Ketel Marte (ARI) | 0.5 -250 | 0.5 +185 |
| Eugenio Suarez (ARI) | 0.5 -235 | 0.5 +175 |
| Gabriel Moreno (ARI) | 0.5 -235 | 0.5 +175 |
| J.P. Crawford (SEA) | 0.5 -220 | 0.5 +165 |
Diamondbacks vs Mariners RBI Prop Bets Today
| Over | Under | |
|---|---|---|
| Corbin Carroll (ARI) | 0.5 +120 | 0.5 -155 |
| Cal Raleigh (SEA) | 0.5 +120 | 0.5 -160 |
| Josh Naylor (ARI) | 0.5 +125 | 0.5 -160 |
| Eugenio Suarez (ARI) | 0.5 +130 | 0.5 -175 |
| Geraldo Perdomo (ARI) | 0.5 +140 | 0.5 -190 |
Diamondbacks vs Mariners Strikeout Prop Bets Today
| Over | Under | |
|---|---|---|
| Merrill Kelly (ARI) | 5.5 -105 | 5.5 -120 |
| Emerson Hancock (SEA) | 3.5 +130 | 3.5 -165 |
Mariners Starting Pitcher Stats & Trends
Left-handed hitters have a line drive rate of 32% (55/172) against Emerson Hancock since last season — highest in MLB among starting pitchers with at least 90 total IP; League Avg: 24% — 0 Percentile.
Opponents have a Hard-Hit Rate of just 9% (2/23) against Emerson Hancock’s elevated fastballs this season — best in MLB among starting pitchers with at least 25 total IP; League Avg: 39% — 100th Percentile.
Emerson Hancock has allowed an OPS of 1.070 (80 PA’s) versus the top of the order this season — 2nd highest in MLB among starting pitchers with at least 25 total IP; League Avg: .748 — first Percentile.
Emerson Hancock has spotted his fastball inside for a strike 79% (128/162) of the time this season — highest in MLB among starting pitchers with at least 25 total IP; League Avg: 65% — 100th Percentile.
Diamondbacks Starting Pitcher Stats & Trends
Opponents are hitting just .144 (16-for-111) against Merrill Kelly when going through the lineup the second time in a game this season — tied for 2nd best among qualified SPs in MLB; League Avg: .234 — 98th Percentile.
Merrill Kelly walked 25 of 207 batters (12%) versus the bottom of the order in 2023 — highest among qualified SPs in MLB; League Avg: 7% — second Percentile.
Merrill Kelly has allowed an OBP of just .188 (117 PA’s) when going through the lineup the second time in a game this season — tied for best among qualified SPs in MLB; League Avg: .293 — 100th Percentile.
Opponents are hitting just .157 (20-for-127) against Merrill Kelly’s non-fastballs this season — tied for 5th best among qualified SPs in MLB; League Avg: .213 — 93rd Percentile.
Mariners Keys to the Game vs. the Diamondbacks
The Mariners are 99-1 (.990) when leading entering the 9th inning since last season — 2nd best in MLB; League Avg: .951.
The Mariners are just 12-19 (.387) when tied entering the 8th inning since last season — 5th lowest in MLB; League Avg: .500.
The Mariners are 79-10 (.888) when scoring 5 or more runs since last season — best in MLB; League Avg: .806.
The Mariners are 163-13 (.926) when leading entering the 8th inning since the 2023 season — tied for 4th best in MLB; League Avg: .900.
Diamondbacks Keys to the Game vs. the Mariners
The Diamondbacks are 158-42 (.786) when allowing 4 or fewer runs since the 2023 season — 3rd best in MLB; League Avg: .723.
The Diamondbacks are just 175-14 (.926) when leading entering the 9th inning since the 2023 season — 4th lowest in MLB; League Avg: .950.
The Diamondbacks are 61-53 (.535) on the road since last season — 5th best in MLB; League Avg: .469.
The Diamondbacks are just 26-5 (.839) when leading entering the 8th inning this season — 5th lowest in MLB; League Avg: .903.
Mariners Hitting Stats & Trends
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 .226 when facing the starting pitcher for the 3rd time in a game since the 2023 season — lowest in MLB; League Avg: .263.
The Mariners are batting just .223 at home since the 2023 season — lowest in MLB; League Avg: .248.
The Mariners are batting just .212 when facing the starting pitcher for the 3rd time in a game since last season — lowest in MLB; League Avg: .260.
Diamondbacks Hitting Stats & Trends
Diamondbacks hitters have struck out in just 17% of it’s PA’s against LHP this season — best in MLB; League Avg: 23%.
Diamondbacks hitters had an OBP of .337 (6,284 PA’s) in the 2024 season — best in MLB; League Avg: .312.
Diamondbacks hitters had an OBP of .347 (3,080 PA’s) at home in the 2024 season — best in MLB; League Avg: .315.
Diamondbacks hitters have an OPS of .776 (8,786 PA’s) since last season — 2nd best in MLB; League Avg: .711.
Mariners Pitching Stats & Trends
Mariners pitchers allowed an OBP of just .251 (1,441 PA’s) when facing the leadoff batter in the inning in the 2024 season — best in MLB; League Avg: .305.
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%.
The Mariners pitchers have allowed division opponents to score first in just 34% of their games since the 2023 season — lowest in MLB; League Avg: 50%.
Diamondbacks Pitching Stats & Trends
Opponents have a groundball rate of 52% against Diamondbacks pitchers over the last 14 days — highest in MLB; League Avg: 42%.
The Diamondbacks pitchers have allowed their opponents to score first in just 40% of their games since last season — tied for lowest in MLB; League Avg: 50%.
Opponents had a miss rate of just 24% against Diamondbacks pitchers in the 2024 season — tied for 4th lowest in MLB; League Avg: 25%.
Diamondbacks pitchers had a strikeout rate of just 21% in the 2024 season — 5th lowest in MLB; League Avg: 23%.
More MLB Reading:
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