The smallest player on his team at 5-6, Jim ("Miggs") Reilly was a solid shooter and relentless defender for the 1942-43 Georgetown team that advanced to the NCAA national finals.

Reilly played in 23 games that season, with a season high 14 in Georgetown's season finale, a win over NIT runner-up Toledo. Following wartime service, Reilly returned to Georgetown and played on the 1946-47 team, also as a reserve guard.

A coach of the Georgetown freshman team while in law school, Reilly was an unsuccessful candidate for the Georgetown coaching position in 1952 that was offered to Buddy Jeannette; in lieu of the Georgetown job, Reilly became head coach at Catholic University from 1953 to 1958 before becoming a full-time attorney.

At the time of his death in 2020, Miggs Reilly was the last surviving member of the 1942-43 team.