MLB Prop Bets: Arizona Diamondbacks vs Colorado Rockies (August 12, 2026)
The Colorado Rockies (47-73) face the Arizona Diamondbacks (64-57) at Chase Field on Wednesday at 3:40pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Ryan Feltner is the probable pitcher for the Rockies, while Merrill Kelly is the probable pitcher for the Diamondbacks. The Diamondbacks are favored to win at -170, while the Rockies are at +158. The total runs line is set at 9.0, with OVER at -120 and UNDER at +100.
- The Rockies (-136) have a 63-57 Run Line record this season, while the Diamondbacks (+113) hold a record of 68-53.
- The Rockies have a 57-58-5 O/U record this season (meaning 57 games have gone over the total runs line, 58 have gone under and five have resulted in a push). The Diamondbacks have a 48-64-9 O/U record.
Scoring Insights
- The Rockies are averaging 4.8 runs per game this season (7th in the league). Comparatively, the Diamondbacks are averaging 4.5 (13th).
- In the field, the Rockies are allowing a whopping 5.7 runs per game this season (29th in the league), while the Diamondbacks are allowing an average of 4.4 runs (T16th).
Let's take a look at how these teams perform in some other key statistical areas.
Batting Insights:
Batting Average
- Looking at their batting averages this season, the Rockies are at .255 (ranking 4th in the Major leagues), while the Diamondbacks are batting .242 (18th).
Home Runs
- In terms of total home runs this season, the Diamondbacks have hit 117 (27th in the Major Leagues). Meanwhile, the Rockies have managed 135 (T17th).
Runs Batted In
- Finally, looking at their runs batted in, the Rockies have recorded 548 RBIs to rank 7th in the MLB this season. Comparatively, the Diamondbacks have recorded 520 RBIs to rank 11th.
Pitching Insights:
Earned Run Average
- The Diamondbacks have an earned run average of 4.10 this season (15th in the Majors), while The Rockies have an ERA of 5.48 (29th).
Strikeouts
- Turning our attention to total strikeouts, the Rockies have recorded 827 this season, ranking 29th in the MLB. Meanwhile, the Diamondbacks rank 30th for total strikeouts, recording 821.
Opponent Batting Average
- Opponents are batting an average of .251 against the Diamondbacks this season (23rd in the Major Leagues). Comparatively, the Rockies' opponents are at .288 (30th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Rockies | 30-44-46 | 20-22-17 | 10-22-29 | 1-2-1 | 29-42-45 | 0-0-0 | 2-5-3 |
| Diamondbacks | 27-32-62 | 16-13-31 | 11-19-29 | 15-10-25 | 12-22-37 | 0-0-2 | 3-2-5 |
Lead After Three Innings
The Rockies are +130 to lead after three innings, while the Diamondbacks are -166.
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Rockies | 37-59-24 | 24-23-12 | 13-36-12 | 1-2-1 | 36-57-23 | 0-0-0 | 2-6-2 |
| Diamondbacks | 39-55-27 | 26-19-15 | 12-35-12 | 23-14-13 | 16-41-14 | 1-1-0 | 5-3-2 |
NRFI/YRFI
The NRFI market is paying +105 and the YRFI is paying -135.
- The NRFI is 42-78 in Rockies games this season. The Diamondbacks have a 54-67 NRFI record.
Last Time They Met
The Rockies recorded an upset 3-2 victory over the Diamondbacks at Chase Field yesterday. Ketel Marte was unstoppable in that matchup, hitting a home run, a single and recording an RBI. That result snapped the Diamondbacks' three-game winning streak against the Rockies.
