|Born: July 21, 1959|
Corpus Christi, Texas
|April 8, 1987, for the Baltimore Orioles|
|Last MLB appearance|
|August 4, 1994, for the Baltimore Orioles|
|Earned run average||3.86|
|Career highlights and awards|
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.
- Career statistics and player information from Baseball-Reference
| No-hit game
July 13, 1991
with Milacki, Flanagan & Olson
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