Mark Williamson
P
Age: 67
Bats/Throws: R/R
6'0" / 172
DOB: 7/21/1959
(67 years, 2 months, 13 days)
P
Updated: Saturday, October 3, 2026 11:59 PM ETUpdated: 10/3/2026 11:59 PM ET
All major league baseball data including pitch type, velocity, batted ball location, and play-by-play data provided by Sports Info Solutions.
Major League and Minor League Baseball data provided by Major League Baseball.
Mitchel Lichtman
All UZR (ultimate zone rating) calculations are provided courtesy of Mitchel Lichtman.
TangoTiger.com
All Win Expectancy, Leverage Index, Run Expectancy, and Fans Scouting Report data licenced from TangoTiger.com
Retrosheet.org
Play-by-play data prior to 2002 was obtained free of charge from and is copyrighted by Retrosheet.
