MLB Sims

Giants @ D-backs

2026-05-18

Chase Field · park factor 1.02 · first pitch 2026-05-19T01:40:00Z

Win probability

SF
40.4%
ARI
45.6%
Extras needed
14.0%

Expected runs

SF expected
3.81
ARI expected
4.05
Total expected
7.86
Total — 10/median/90
4 / 8 / 11

Most likely final scores

Score (SF–ARI)Probability
3 – 44.10%
4 – 33.97%
3 – 33.70%
4 – 43.68%
2 – 43.27%
2 – 33.09%
3 – 53.09%
3 – 23.00%

Over / under

LineOverUnder
10.5 17.1% 82.9%
6.5 67.1% 32.9%
7.5 52.6% 47.4%
8.5 38.6% 61.4%
9.5 26.7% 73.4%
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 →