Laurie Castator (Thompson) decided to make Durham College her choice for post secondary education starting in 1984. The talented fastball player quickly established herself as a dominating pitcher in the OCAA in her first year, helping the Lords to the OCAA championship. She combined with fellow standout pitcher Darlene Anderson to make up one of the most feared pitching duos in OCAA history.

The following year, she copped OCAA all-star status and was also named the OCAA league top pitcher posting a perfect 5-0 record. That same reason, she helped her team to an OCAA bronze medal following a regular season pennant. All told, she helped lead the Lords to three straight regular season pennants.

Known as one of the hardest throwing pitchers on the college circuit, she completed her OCAA fastball career in 1986-87 with a stellar 16-2 record over her three seasons, good for seventh all-time in wins and the third best all-time winning percentage in Durham College women's fastball history.

Laurie was named a member of the OCAA women's fastball all-millennium team.