Colorado Rockies vs Arizona Diamondbacks Preview
Today's Starting Matchup
Today's starting pitching matchup features Colorado Rockies's Zach Agnos (0-0, 5.59 ERA) against Arizona Diamondbacks's Eduardo Rodriguez (4-1, 2.53 ERA).
Arizona Diamondbacks's Eduardo Rodriguez posts an solid 2.53 ERA this season, while Zach Agnos has been struggling at 5.59. There is a clear gap in starting pitching quality.
Advanced metrics: Zach Agnos — FIP 4.20, K% 15.6%, 29.0 IP / Eduardo Rodriguez — FIP 3.85, K% 17.5%, 53.3 IP
Team Season Comparison
2026 season record: Colorado Rockies 19-31 (.380), Arizona Diamondbacks 25-23 (.521).
Arizona Diamondbacks holds the edge in the season standings, though Colorado Rockies can't be counted out based on head-to-head matchups.
Run differential: Colorado Rockies -54, Arizona Diamondbacks -2. Both clubs are evenly matched in run production.
Recent form: Colorado Rockies on a 2-game losing streak, Arizona Diamondbacks on a 4-game win streak.
Based on starting pitching, Arizona Diamondbacks holds the edge.
Bullpen Analysis
Colorado Rockies bullpen: 13 relievers on the active roster. Key arms: Antonio Senzatela 1.19 ERA, 26K in 30.1IP, Brennan Bernardino 3.86 ERA, 14K in 18.2IP, Jaden Hill (Setup) 2.84 ERA, 21K in 19.0IP.
Arizona Diamondbacks bullpen: 13 relievers on the active roster. Key arms: Brandon Pfaadt 5.61 ERA, 27K in 33.2IP, Brandyn Garcia 1.23 ERA, 7K in 7.1IP, Eduardo Rodriguez 2.53 ERA, 39K in 53.1IP.
Win Probability
Projected win probability: Colorado Rockies 36% vs Arizona Diamondbacks 64%
Factors: Arizona Diamondbacks's starter owns the lower ERA, Arizona Diamondbacks's home-field advantage. Of course, baseball's inherent randomness means actual results may differ.
Key Tactical Points
Workload comparison: Zach Agnos averages - IP per start vs. Eduardo Rodriguez at 5.9 IP. Getting six-plus innings from the starter significantly eases the bullpen burden.