MLB Sims

Pirates @ Cardinals

2026-05-21

Busch Stadium · park factor 0.96 · first pitch 2026-05-21T17:15:00Z

Win probability

PIT
58.5%
STL
28.8%
Extras needed
12.7%

Expected runs

PIT expected
4.76
STL expected
3.64
Total expected
8.40
Total — 10/median/90
5 / 8 / 12

Most likely final scores

Score (PIT–STL)Probability
5 – 33.87%
4 – 33.81%
4 – 43.36%
5 – 43.33%
5 – 23.24%
4 – 23.22%
3 – 33.20%
3 – 42.98%

Over / under

LineOverUnder
10.5 22.7% 77.3%
6.5 73.9% 26.1%
7.5 60.6% 39.4%
8.5 46.8% 53.2%
9.5 33.7% 66.3%
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 →