Diamondbacks vs Rockies Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 12

Odds updated as of 3:13 p.m.

MLB action on Wednesday includes the Arizona Diamondbacks facing the Colorado Rockies.

All the information you need to make smart bets on this game at FanDuel Sportsbook can be found below. Check out all of the latest MLB betting lines here.

Diamondbacks vs Rockies Game Info

• Arizona Diamondbacks (64-57) vs. Colorado Rockies (47-73)
• Date: Wednesday, August 12, 2026
• Time: 3:40 p.m. ET
• Venue: Chase Field -- Phoenix, Arizona
• Coverage: Dbacks.TV and Rockies.TV

Diamondbacks vs Rockies Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: ARI: (-160) | COL: (+148)
• Spread: ARI: -1.5 (+126) | COL: +1.5 (-152)
• Total: 9.5 -- Over: (+102) | Under: (-124)

Diamondbacks vs Rockies Probable Starting Pitchers

Probable Pitchers: Merrill Kelly (Diamondbacks) - 8-9, 4.88 ERA vs Ryan Feltner (Rockies) - 4-6, 5.71 ERA

The probable starters are Merrill Kelly (8-9) for the Diamondbacks and Ryan Feltner (4-6) for the Rockies. Kelly and his team have a record of 12-9-0 against the spread when he starts. Kelly's team has a record of 3-4 this season when he starts and they are the favorite on the moneyline. When Feltner starts, the Rockies are 9-8-0 against the spread. The Rockies have been the underdog on the moneyline in 16 of Feltner's starts this season, and they went 6-10 in those games.

Diamondbacks vs Rockies Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Diamondbacks win (67.4%)

Diamondbacks vs Rockies Moneyline

• Looking at the moneyline for Rockies-Diamondbacks, Colorado is the underdog at +148, and Arizona is -160 playing at home.

Diamondbacks vs Rockies Spread

• The Diamondbacks are favored by 1.5 runs at home versus the Rockies. The Diamondbacks are +126 to cover the spread, while the Rockies are -152.

Diamondbacks vs Rockies Over/Under

• Diamondbacks versus Rockies on Aug. 12 has an over/under of 9.5 runs, with the odds on the over +102 and the under set at -124.

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Diamondbacks vs Rockies Betting Trends

• The Diamondbacks have been chosen as favorites in 50 games this year and have walked away with the win 30 times (60%) in those games.
• Arizona has a record of 6-2 when favored by -160 or more this year.
• The Diamondbacks and their opponents have gone over in 50 of their 120 games with a total set by sportsbooks this season.
• The Diamondbacks are 65-55-0 against the spread in their 120 games with a line set by sportsbooks this season.
• The Rockies have been the underdog on the moneyline 113 total times this season. They've finished 44-69 in those games.
• Colorado has gone 15-39 when it has played as a moneyline underdog with odds of +148 or longer (27.8%).
• The Rockies have combined with opponents to hit the over on the total 56 times this season for a 56-58-3 record against the over/under.
• The Rockies have a 62-55-0 record ATS this season.

Diamondbacks Player Leaders

• Ketel Marte has an OPS of .758, fueled by an OBP of .310 and a team-best slugging percentage of .448 this season. He has a .249 batting average.
• Among qualifying hitters in MLB, he is 85th in batting average, 110th in on-base percentage, and 51st in slugging.
• Marte hopes to build on a three-game hitting streak in this matchup. During his last five outings he is hitting .278 with a double, two home runs, three walks and four RBIs.
• Corbin Carroll has 106 hits, which is best among Arizona batters this season. He's batting .241 with 54 extra-base hits. He's also slugging .470 with an on-base percentage of .335.
• He is 100th in batting average, 67th in on-base percentage and 34th in slugging in the major leagues.
• Carroll has picked up a hit in two games in a row. In his last five games he is batting .158 with a double, a triple, a home run, a walk and three RBIs.
• Geraldo Perdomo is batting .244 with a .374 slugging percentage and 42 RBI this year.
• Gabriel Moreno has 99 hits this season and a team-best OBP of .383.
• Moreno has hit safely in six straight games. In his last 10 games he is batting .275 with four doubles, a triple, three walks and seven RBIs.

Rockies Player Leaders

• Jake McCarthy is batting .303 with 25 doubles, seven triples, 13 home runs and 19 walks. He's slugging .511 with an on-base percentage of .340.
• Including all qualified hitters in the majors, he ranks eighth in batting average, 60th in on-base percentage and 14th in slugging percentage.
• TJ Rumfield has a .371 on-base percentage while slugging .455. Both pace his team. He has a batting average of .294.
• He is currently 11th in batting average, 15th in on-base percentage and 43rd in slugging percentage among all qualified hitters.
• Hunter Goodman has racked up 104 hits, a team-high for the Rockies.
• Kyle Karros is hitting .265 with 20 doubles, two triples, 10 home runs and 47 walks.

Diamondbacks vs Rockies Head to Head

• 8/11/2026: 3-2 COL (Favorite: Diamondbacks, Spread: -1.5, Total: 9.5, Favorite Moneyline: -160, Underdog Moneyline: +148)
• 8/10/2026: 9-0 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -205, Underdog Moneyline: +186)
• 5/24/2026: 9-1 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -198, Underdog Moneyline: +166)
• 5/23/2026: 5-4 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 9.5, Favorite Moneyline: -188, Underdog Moneyline: +158)
• 5/22/2026: 3-2 COL (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -220, Underdog Moneyline: +184)
• 5/21/2026: 2-1 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 9.5, Favorite Moneyline: -205, Underdog Moneyline: +172)
• 5/16/2026: 4-2 COL (Favorite: Diamondbacks, Spread: -1.5, Total: 11.5, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 5/15/2026: 9-1 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 11.5, Favorite Moneyline: -122, Underdog Moneyline: +104)
• 8/17/2025: 6-5 COL (Favorite: Diamondbacks, Spread: -1.5, Total: 12, Favorite Moneyline: -144, Underdog Moneyline: +122)
• 8/16/2025: 10-7 COL (Favorite: Diamondbacks, Spread: -1.5, Total: 11.5, Favorite Moneyline: -174, Underdog Moneyline: +146)