MLB Sims

Rockies @ D-backs

2026-05-21

Chase Field · park factor 1.02 · first pitch 2026-05-22T01:40:00Z

Win probability

COL
29.3%
ARI
57.9%
Extras needed
12.8%

Expected runs

COL expected
3.94
ARI expected
5.07
Total expected
9.02
Total — 10/median/90
5 / 9 / 13

Most likely final scores

Score (COL–ARI)Probability
3 – 53.62%
4 – 53.61%
4 – 43.30%
3 – 43.20%
4 – 62.79%
5 – 42.76%
2 – 42.74%
3 – 32.73%

Over / under

LineOverUnder
10.5 29.3% 70.7%
6.5 79.0% 21.0%
7.5 67.5% 32.5%
8.5 54.2% 45.8%
9.5 41.5% 58.5%
These numbers come from 10,000 Poisson simulations using season-to-date team strengths. No starting pitcher, lineup, or weather adjustment is applied (yet). Full methodology →