Mark was recruited to the University of Miami under Lou Saban who later left and was replaced by Howard Schnellenberger (who Mark says he owes his career to). Mark went to Miami as a tight-end and moved to tackle his junior year and excelled to receive two Player of the Game Awards, against Notre Dame and North Carolina, then was voted the Most Outstanding Offensive Lineman, 1982, presented by the Miami Touchdown Club. And later was voted to a Miami All-Time Team by the Miami Herald. Mark was a 2nd Team All South Independent All American by the Associated Press. Mark Played in the East West Shrine Game and the North-South Senior Bowl and was drafted by the Denver Broncos as a 2nd round draft pick in 1983, playing seven years in the NFL. Mark played four years with the Denver Broncos (1983-1986) and three years with the Tampa Bay Buccaneers (1987-1989). While with the Broncos, he was a member of the 1986 AFC Championship Team that played the Cleveland Browns in the famous AFC Championship game labeled “The Drive” and in SuperBowl XXI of the same season in Pasadena against the New York Giants. Throughout his career he protected quarterbacks like Jim Kelly in college, then John Elway, Vinny Testaverde and Steve Deberg and Joe Ferguson. Mark now resides in Colorado with his wife Nancy and two sons, Michael and Cameron. He is involved in real estate sales and mortgage financing throughout the Denver metro area. He travels extensively and enjoys recreational and tournament fly fishing, outdoor writing and has been published in the Redbone Journal, The Denver Post, Florida Sportsman, and the Key West Magazine along with other magazines.