Colorado Rockies vs Arizona Diamondbacks

May 21, 2026 — MLB Prediction & Betting Pick

Our model leans Arizona Diamondbacks

On balance, more tracked inputs leaned Arizona Diamondbacks (21 edges vs 5 for Colorado Rockies).

The model's lean aligns with the overall edge count. Both the machine-learning model and the raw feature comparison point the same direction for this game.

Matchup Breakdown

Recent form (last ~10 games) — leans Arizona Diamondbacks

Looking at recent performance trends over the last ten games — including win rate, run differential, and offensive momentum — the matchup favors the Arizona Diamondbacks.

Arizona Diamondbacks 0.500 vs Colorado Rockies 0.250 — leans Arizona Diamondbacks
Arizona Diamondbacks 0.70 vs Colorado Rockies -2.45 — leans Arizona Diamondbacks
Arizona Diamondbacks 4.35 vs Colorado Rockies 3.85 — leans Arizona Diamondbacks
Arizona Diamondbacks 3.65 vs Colorado Rockies 6.30 — leans Arizona Diamondbacks
Arizona Diamondbacks 1 vs Colorado Rockies 0.333 — leans Arizona Diamondbacks
Arizona Diamondbacks 1.762 vs Colorado Rockies 0.952 — leans Arizona Diamondbacks

Season to date — leans Arizona Diamondbacks

Season-long stats including runs scored and allowed per game, home/road splits, and weighted offensive production (wRC+) the matchup favors the Arizona Diamondbacks.

Arizona Diamondbacks 4.60 vs Colorado Rockies 4.04 — leans Arizona Diamondbacks
Arizona Diamondbacks 4.65 vs Colorado Rockies 5.08 — leans Arizona Diamondbacks
Arizona Diamondbacks 0.667 vs Colorado Rockies 0.286 — leans Arizona Diamondbacks
Arizona Diamondbacks 97.9 vs Colorado Rockies 98.3 — roughly even

Starting pitching (recent starts) — leans Arizona Diamondbacks

Evaluating the probable starters based on recent ERA, WHIP, strikeout rate, and pitching form trends, the matchup favors the Arizona Diamondbacks.

Arizona Diamondbacks 3.58 vs Colorado Rockies 4.97 — leans Arizona Diamondbacks
Arizona Diamondbacks 1.45 vs Colorado Rockies 1.11 — leans Colorado Rockies
Arizona Diamondbacks 5.53 vs Colorado Rockies 2.84 — leans Arizona Diamondbacks
Arizona Diamondbacks -5.64 vs Colorado Rockies 2.40 — leans Arizona Diamondbacks
Arizona Diamondbacks 5.56 vs Colorado Rockies 7.62 — leans Arizona Diamondbacks
Arizona Diamondbacks 1.37 vs Colorado Rockies 1.62 — leans Arizona Diamondbacks
Arizona Diamondbacks 3.45 vs Colorado Rockies 4.45 — leans Arizona Diamondbacks
Arizona Diamondbacks 0 vs Colorado Rockies 0 — roughly even

Offense & matchup — Mixed

The offensive matchup is closely contested between Colorado Rockies and Arizona Diamondbacks.

Arizona Diamondbacks 0.373 vs Colorado Rockies 0.390 — leans Colorado Rockies
Arizona Diamondbacks 0.508 vs Colorado Rockies 0.484 — leans Arizona Diamondbacks
Arizona Diamondbacks 0.384 vs Colorado Rockies 0.409 — leans Colorado Rockies
Arizona Diamondbacks 0.503 vs Colorado Rockies 0.542 — leans Colorado Rockies
Arizona Diamondbacks 0.383 vs Colorado Rockies 0.355 — leans Arizona Diamondbacks
Arizona Diamondbacks 0.490 vs Colorado Rockies 0.434 — leans Arizona Diamondbacks
Arizona Diamondbacks 0.702 vs Colorado Rockies 0.957 — leans Colorado Rockies
Arizona Diamondbacks 0.010 vs Colorado Rockies -0.036 — leans Arizona Diamondbacks

Series & head-to-head — leans Arizona Diamondbacks

Prior head-to-head meetings this season's training window — win rate and run differential between these clubs — the matchup favors the Arizona Diamondbacks.

Arizona Diamondbacks 0.667 vs Colorado Rockies 0.333 — leans Arizona Diamondbacks
Arizona Diamondbacks 2.67 vs Colorado Rockies -2.67 — leans Arizona Diamondbacks

Betting Lines

Arizona Diamondbacks -1.5 | O/U 9.5 (FanDuel)

Final Score

Colorado Rockies 1, Arizona Diamondbacks 2 — Arizona Diamondbacks win — Model pick was correct

This analysis is generated by a machine-learning model and is intended for informational and entertainment purposes only. It does not constitute financial or betting advice. Past model performance does not guarantee future results. Please gamble responsibly.