MLB Prop Bets: Colorado Rockies vs Arizona Diamondbacks (May 15, 2026)
The Arizona Diamondbacks (20-22) face the Colorado Rockies (17-27) at Coors Field on Friday at 8:40pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Merrill Kelly is the probable pitcher for the Diamondbacks, while Kyle Freeland is the probable pitcher for the Rockies. The Diamondbacks are favored to win at -125, while the Rockies are at +104. The total runs line is set at 11.5, with OVER at -112 and UNDER at -107.
- The Diamondbacks (+119) have a 25-17 Run Line record this season, while the Rockies (-143) hold a record of 23-21.
- The Diamondbacks have a 20-18-4 O/U record this season (meaning 20 games have gone over the total runs line, 18 have gone under and four have resulted in a push). The Rockies have a 21-22-1 O/U record.
Scoring Insights
- The Diamondbacks are averaging 4.3 runs per game this season (17th in the league). Comparatively, the Rockies are averaging 4.3 (16th).
- In the field, the Diamondbacks are allowing 4.9 runs per game this season (23rd in the league), while the Rockies are allowing an average of 5.1 runs (27th).
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 Diamondbacks are at .234 (ranking 20th in the Major leagues), while the Rockies are batting .248 (7th).
Home Runs
- In terms of total home runs this season, the Rockies have hit 43 (18th in the Major Leagues). Meanwhile, the Diamondbacks have managed 37 (24th).
Runs Batted In
- Finally, looking at their runs batted in, the Diamondbacks have recorded 173 RBIs to rank T24th in the MLB this season. Comparatively, the Rockies have recorded 182 RBIs to rank 14th.
Pitching Insights:
Earned Run Average
- The Rockies have an earned run average of 4.83 this season (28th in the Majors), while The Diamondbacks have an ERA of 4.43 (23rd).
Strikeouts
- Turning our attention to total strikeouts, the Diamondbacks have recorded 315 this season, ranking 29th in the MLB. Meanwhile, the Rockies rank 27th for total strikeouts, recording 329.
Opponent Batting Average
- Opponents are batting an average of .270 against the Rockies this season (30th in the Major Leagues). Comparatively, the Diamondbacks' opponents are at .242 (18th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Diamondbacks | 9-12-21 | 4-5-10 | 5-7-9 | 3-2-7 | 6-10-14 | 0-0-2 | 2-2-6 |
| Rockies | 12-15-17 | 6-8-5 | 6-7-12 | 0-0-0 | 12-15-17 | 0-0-0 | 2-4-4 |
Lead After Three Innings
The Diamondbacks are -115 to lead after three innings, while the Rockies are -115.
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Diamondbacks | 14-19-9 | 8-5-6 | 5-13-3 | 7-1-4 | 7-18-5 | 1-1-0 | 5-3-2 |
| Rockies | 11-23-10 | 5-10-4 | 6-13-6 | 0-0-0 | 11-23-10 | 0-0-0 | 1-8-1 |
NRFI/YRFI
The NRFI market is paying +115 and the YRFI is paying -150.
- The NRFI is 18-24 in Diamondbacks games this season. The Rockies have a 17-27 NRFI record.
Last Time They Met
The Rockies recorded a 6-5 victory over the Diamondbacks at Coors Field when these teams last met on August 17, 2025. Corbin Carroll was unstoppable in that matchup, hitting a home run, a single and recording an RBI. The Rockies have now won three straight against the Diamondbacks.
