After graduating college, Sullivan spent two years as the manager of
Schaefer Stadium. In 1979, he was named assistant general manager. On February 17, 1983, Sullivan was promoted to general manager. During his tenure as general manager, the Patriots had a 66–65 record and made the playoffs twice, including an appearance in
Super Bowl XX. After the Patriots 1985 Divisional Playoff victory against the
Los Angeles Raiders, Sullivan was punched in the face by Raiders linebacker
Matt Millen — who hit Sullivan in retaliation for his heckling of his Raiders teammate
Howie Long from the sidelines. After
Boston Herald reporter
Lisa Olson complained of being sexually harassed in the Patriots' locker room, team chairman and majority owner
Victor Kiam sought to suspend Sullivan. However, National Football League Commissioner
Paul Tagliabue stepped in and prevented the suspension. On December 20, 1990, Kiam named
Sam Jankovich CEO of the Patriots and gave him complete control of the organization. On January 29, Sullivan announced his resignation. ==Post-Patriots==