His older brother is three-time All-Ireland-winning Tyrone star, Brian McGuigan, and his father Frank is considered one of the legends of Tyrone football. In 2008 Tommy and Brian picked up All Ireland winning medals and their older brother Frank also has an All Ireland medal to his name as a result of being on the 2003 panel.
Youngest brother Shay McGuigan is also a member of the Tyrone all-ireland winning minor panel of 2008 and is in his second year playing for the tyrone minors.
In his championship debut against Fermanagh, McGuigan led the Tyrone charge, in a shaky performance for the team. He scored three valuable points, as Tyrone were playing through difficult portions of the match.
During the 2008 championship McGuigan proved to be one of the finds of the season and scored a vital goal at the start of the second half of the 2008 All-Ireland Final. He finished the season with an impressive 1-21 (24 points).
Notes: J Devine was on the starting lineup but had to withdraw from the squad due to a family bereavement. Stephen O'Neill's name was not in the match program due to there only being space for thirty names. He played, and came on as a substitute with the number 31 on his back.
Paul Quinn's name was not in the match program due to there only being space for thirty names.