Mets vs Diamondbacks Prediction, Odds & Player Prop Bets Today – MLB, May 9

Arizona Diamondbacks' Pavin Smith rounds the bases after his two-run home run during the second inning of a baseball game against the Detroit Tigers, Sunday, June 11, 2023, in Detroit.
(AP Photo/Carlos Osorio)
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  • The Mets are -118 favorites vs the Diamondbacks
  • Mets vs Diamondbacks Over / Under today: 9.5 Runs
  • Mets / Diamondbacks TV Channel: FOX

The New York Mets (-118) visit Chase Field to take on the Arizona Diamondbacks (-102) on May 9, 2026. First pitch is scheduled for 7:15 pm in Phoenix, AZ.

This season, the Mets are 15-23 against the spread (ATS), while the Diamondbacks are 23-14 ATS.

Mets vs Diamondbacks Starting Pitchers Today:

  • Mets starting pitcher: Clay Holmes 4-2, 1.69 ERA
  • Diamondbacks starting pitcher: Merrill Kelly 1-3, 9.79 ERA

Mets vs. Diamondbacks Odds, Run Line, Over/Under & Moneyline

SpreadOver / UnderMoneyline
Mets-1.5 +140O 9.5 -130-118
Diamondbacks +1.5 -170U 9.5 +100-102

Mets vs Diamondbacks Prediction for Today’s Game

Based on recent trends the model predicts the Mets 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 Mets players for Saturday‘s game, looking at profitable historical betting trends:

Best Mets Player Prop Bets Today:

  • Brett Baty has hit the Hits Runs and RBIs Under in 16 of his last 20 games (+12.00 Units / 46% ROI)
  • Mark Vientos has hit the Home Runs Over in 3 of his last 8 away games (+11.90 Units / 149% ROI)
  • Brett Baty has hit the Hits Under in 13 of his last 20 games (+9.32 Units / 44% ROI)
  • Brett Baty has hit the Total Bases Under in 14 of his last 20 games (+8.95 Units / 35% ROI)
  • Mark Vientos has hit the Singles Under in 9 of his last 10 away games (+8.15 Units / 59% ROI)

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

Best Diamondbacks Player Prop Best Bets Today:

  • Ildemaro Vargas has hit the Home Runs Over in 3 of his last 9 games at home (+18.60 Units / 207% ROI)
  • Ildemaro Vargas has hit the Hits Over in 20 of his last 25 games (+13.40 Units / 28% ROI)
  • Jorge Barrosa has hit the Singles Under in 17 of his last 20 games (+12.50 Units / 39% ROI)
  • Lourdes Gurriel Jr. has hit the Total Bases Under in 18 of his last 25 games at home (+9.10 Units / 26% ROI)
  • Adrian Del Castillo has hit the Runs Under in his last 8 games at home (+8.30 Units / 62% ROI)
  • The New York Mets have hit the Team Total Under in 26 of their last 35 games (+16.50 Units / 41% ROI)
  • The New York Mets have hit the 1st Five Innings (F5) Team Total Under in 28 of their last 40 games (+15.25 Units / 31% ROI)
  • The New York Mets have hit the Game Total Under in 16 of their last 23 away games (+9.30 Units / 37% ROI)
  • The New York Mets have covered the Run Line in 4 of their last 5 games (+3.70 Units / 74% ROI)
  • The New York Mets have hit the 1st Five Innings (F5) Moneyline in 3 of their last 5 games (+3.00 Units / 43% ROI)
  • The Arizona Diamondbacks have hit the 1st Five Innings (F5) Team Total Under in 26 of their last 35 games at home (+15.70 Units / 37% ROI)
  • The Arizona Diamondbacks have hit the 1st Five Innings (F5) Moneyline in 26 of their last 50 games at home (+8.70 Units / 13% ROI)
  • The Arizona Diamondbacks have hit the Team Total Over in 29 of their last 50 games (+6.80 Units / 12% ROI)
  • The Arizona Diamondbacks have hit the Game Total Over in 27 of their last 50 games (+6.35 Units / 12% ROI)
  • The Arizona Diamondbacks have hit the Moneyline in 26 of their last 45 games at home (+5.40 Units / 10% ROI)

Mets Against the Spread (ATS) Record

Against the spread this season, the Mets are 14-24 against the Run Line (-8.85 Units / -21.05% ROI).

  • 15-23 when betting on the Moneyline for -19.2 Units / -35.26% ROI
  • 14-21 when betting on the total runs Over for -9.25 Units / -22.16% ROI
  • 21-14 when betting on the total runs Under for +5.25 Units / 12.54% ROI

Diamondbacks Against the Spread (ATS) Record

Against the spread this season, the Diamondbacks are 23-14 against the Run Line (+4 Units / 7.41% ROI).

  • 17-20 when betting on the Moneyline for -1.85 Units / -4.55% ROI
  • 20-15 when betting on the total runs Over for +3.75 Units / 9.2% ROI
  • 15-20 when betting on the total runs Under for -6.8 Units / -16.69% ROI

Diamondbacks vs Mets Home Run Prop Bets Today

Yes
Juan Soto +280
MJ Melendez +425
Mark Vientos +475
Ketel Marte +500
Corbin Carroll +550

Diamondbacks vs Mets Total Hits Prop Bets Today

Over Under
Juan Soto 0.5 -275 0.5 +190
Geraldo Perdomo 0.5 -250 0.5 +185
Ketel Marte 0.5 -250 0.5 +185
Corbin Carroll 0.5 -220 0.5 +165
Lourdes Gurriel Jr. 0.5 -220 0.5 +160

Diamondbacks vs Mets Strikeout Prop Bets Today

Over Under
MJ Melendez 0.5 -275 0.5 +190
Adrian Del Castillo 0.5 -250 0.5 +185
Brett Baty 0.5 -225 0.5 +165
Ryan Waldschmidt 0.5 -200 0.5 +145
Francisco Alvarez 0.5 -200 0.5 +150

Mets Keys to the Game vs. the Diamondbacks

The Mets are just 9-4 (.692) when leading entering the 7th inning this season — lowest in MLB; League Avg: .862.

The Mets are just 14-20 (.412) when allowing 5 or more extra base hits this season — lowest in MLB; League Avg: .533.

The Mets are just 15-23 (.395) this season — tied for 2nd lowest in MLB; League Avg: .500.

The Mets are just 0-18 (.000) when trailing entering the 9th inning this season — tied for lowest in MLB; League Avg: .052.

Diamondbacks Keys to the Game vs. the Mets

The Diamondbacks are just 0-16 (.000) when trailing entering the 9th inning this season — tied for lowest in MLB; League Avg: .052.

The Diamondbacks are 4-12 (.250) when trailing entering the 7th inning this season — tied for 3rd best in MLB; League Avg: .138.

The Diamondbacks are just 11-4 (.733) when leading entering the 7th inning this season — tied for 3rd lowest in MLB; League Avg: .862.

The Diamondbacks are just 2-10 (.167) when allowing 2 or more home runs this season — tied for 4th lowest in MLB; League Avg: .304.

The Mets are batting just .168 with two outs this season — lowest in MLB.

Mets hitters have an OPS of just .414 (705 PA’s) with two-strikes this season — lowest in MLB.

Mets hitters have an OBP of just .207 (705 PA’s) with two-strikes this season — lowest in MLB.

The Mets are batting just .144 with two-strikes this season — lowest in MLB.

The Diamondbacks are batting just .179 when facing the starting pitcher for the 3rd time in a game this season — 2nd lowest in MLB.

Diamondbacks hitters have an OBP of just .248 (154 PA’s) when facing the starting pitcher for the 3rd time in a game this season — lowest in MLB.

8% of Diamondbacks’ hitters plate appearances have lasted only one pitch (113/1,354 PA’s) this season — 2nd lowest in MLB.

Diamondbacks hitters have an OBP of just .288 (947 PA’s) against RHP this season — 2nd lowest in MLB.

Mets pitchers have a strikeout rate of 30% versus the bottom of the order this season — best in MLB.

Mets pitchers have a strikeout rate of 25% with runners in scoring position this season — 3rd best in MLB.

Mets pitchers have a strikeout rate of 45% with two-strikes this season — 3rd best in MLB.

Mets pitchers have a strikeout rate of 25% this season — tied for 2nd best in MLB.

Diamondbacks pitchers have a strikeout rate of just 20% this season — 4th lowest in MLB.

Diamondbacks pitchers have walked 6% of batters when facing the leadoff batter in the inning this season — tied for 3rd best in MLB.

Diamondbacks pitchers have a strikeout rate of just 19% with runners in scoring position this season — 2nd lowest in MLB.

Diamondbacks pitchers have induced opposing hitters to ground into just 20 double plays in 266 opportunities (7%) this season — 2nd lowest 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.