MLB Sims

Mariners @ Royals

2026-05-22

Kauffman Stadium · park factor 1.02 · first pitch 2026-05-22T23:40:00Z

Win probability

SEA
41.9%
KC
44.0%
Extras needed
14.1%

Expected runs

SEA expected
4.11
KC expected
4.17
Total expected
8.28
Total — 10/median/90
5 / 8 / 12

Most likely final scores

Score (SEA–KC)Probability
4 – 43.99%
4 – 33.65%
3 – 43.57%
3 – 33.24%
5 – 33.22%
3 – 53.10%
5 – 42.96%
4 – 52.89%

Over / under

LineOverUnder
10.5 21.0% 79.0%
6.5 71.2% 28.7%
7.5 58.2% 41.8%
8.5 43.6% 56.4%
9.5 31.3% 68.7%
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 →