|Intro||American baseball player|
|Is|| Athlete |
|From||United States of America|
|Birth|| 21 July 1959 |
, Corpus Christi, USA
Mark Alan Williamson (born July 21, 1959) is a retired professional baseball player who played pitcher in the Major Leagues from 1987-1994. He played for the Baltimore Orioles. On July 13, 1991, he pitched a no hitter along with Bob Milacki, Mike Flanagan, and Gregg Olson against the Oakland Athletics.
As of 2018, Mark is a real estate broker in the San Diego, CA suburbs.