Together with his brothers, Joel Glazer and Edward Glazer, he owns part of the First Allied Corporation, the Tampa Bay Buccaneers National Football League (NFL) franchise, and the English football club Manchester United.

He then received a Juris Doctor degree from the Whittier Law School located in Southern California.

Glazer is currently executive vice-president of the Tampa Bay Buccaneers and was appointed to that position in 1995.

Glazer was appointed a director of Zapata Corporation in 1997, and served in that position until his retirement in 2009.

Along with Andy Anson (Manchester United's commercial director) and Jeffrey Ajluni (Tampa Bay Buccaneers director of marketing and business development), Glazer was a key player in signing American International Group (AIG) as the club's new shirt sponsor for the 2006–07 season.