Mark is a television sportscaster who has worked a wide variety of assignments for TSN and the ESPN/ABC family of networks. He first worked for ESPN in 1990 and has worked as the play-by-play announcer on NBA, WNBA and college football and men's and women's college basketball telecasts.
Mark also worked for ABC Sports, where his duties included college football and basketball and various events on ABC's Wide World of Sports.
Before joining ESPN/ABC, Mark worked for Canada's The Sports Network (TSN) from 1986-90 where he was the sports desk anchor and the host of a Toronto Blue Jays magazine show.
Mark graduated from York University in Toronto with a Bachelor of Arts degree in Economics in 1985 and where he was a four-year member of the basketball team. His older brother Paul is the radio play-by-play voice for the Toronto Raptors.