Mark Steven Bortz (born February 12, 1961 in Pardeeville, Wisconsin) was a guard in the National Football League. He attended the University of Iowa and was drafted by the Bears in 1983 for the Chicago Bears and played there until 1994.
Professional career 
The Bears' 1983 draft class is regarded as one of the best of all-time; providing 7 starters, including 3 for the Offensive Line - Bortz, fellow Guard Tom Thayer, and Tackle Jim Covert. When interviewed about the draft class for nfl.com, Coach Mike Ditka stated that Bortz was a converted defensive player, with great feet, and he formed part of a solid offensive line.
A two-time Pro Bowler, Bortz won a Super Bowl as a member of the 1985 Chicago Bears. He also holds the record for most playoff appearances by a Chicago Bear with 13.
Personal life 
On March 7, 2013, a two-story house belonging to Bortz in Liberty, Illinois burned down. Firefighters had attempted to save the house, but the house was fully engulfed in flames by arrival.