During his four-year tenure at Hartford Thomas' accomplishments were being named All-New England and First Team All-Conference in 1993 and 1994, and serving captain in both those seasons.
The following season the USISL Select League merged with the A-League, which resulted in Thomas returning to his hometown to sign with the newly expansion franchise Toronto Lynx.
[5] He helped the Lynx to set a franchise and A-league record of ten straight wins; their streak came to an end with a 1–0 defeat to Long Island Rough Riders on June 22.
During the club's playoff run Thomas started in the first leg of the semi-final match against the Montreal Impact where the Lynx were defeated 2–1.
[7] On August 26 the Toronto Lynx traded Thomas to rivals Montreal Impact for future considerations and an undisclosed amount of cash.
Thomas left Montreal in September 1999, when new ownership opted against fielding an outdoor squad in order to properly prepare for the 1999-2000 indoor season.
[11] In doing so he led the Olympians to their first Rogers Cup triumph, where he scored the opening goal in a 2–0 victory over Toronto Croatia on October 2 in the CPSL playoff finals match.
[14] Due to a sensational debut season he received his first cap for the national side and was part of the winning team in the 2000 CONCACAF Gold Cup.
The victory in claiming the Open Cup marked the first time in league history a club winning the trophy three consecutive years in a row.
Thomas was responsible for scoring the lone goal that would clinch the title for the Scarborough-based club, in a 1–0 victory over St. Catharines Roma Wolves.
[23] Thomas had a stint in the National Professional Soccer League with the short lived expansion franchise the Toronto ThunderHawks during the 2000-2001 winter indoor season.
He made his debut for Canada in an October 1999 CONCACAF Gold Cup qualification match against Haiti and went on to earn a total of 3 caps, scoring no goals.