MLB Sims

Mariners @ Royals

2026-05-23

Kauffman Stadium · park factor 1.02 · first pitch 2026-05-23T20:10:00Z

Win probability

SEA
44.8%
KC
41.0%
Extras needed
14.2%

Expected runs

SEA expected
3.95
KC expected
3.84
Total expected
7.79
Total — 10/median/90
4 / 8 / 11

Most likely final scores

Score (SEA–KC)Probability
3 – 43.77%
4 – 33.75%
3 – 33.74%
4 – 43.70%
3 – 23.57%
4 – 23.33%
5 – 33.31%
3 – 53.10%

Over / under

LineOverUnder
10.5 16.2% 83.8%
6.5 65.7% 34.3%
7.5 51.8% 48.2%
8.5 37.8% 62.3%
9.5 25.7% 74.3%
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 →