Mark James Markovich (born November 7, 1952) is an American former professional football player who was an offensive lineman for four seasons in the National Football League (NFL), where he played for the San Diego Chargers and Detroit Lions. Prior to his professional career, Markovich played college football for the Penn State Nittany Lions, blocking for Heisman Trophy–winner John Cappelletti. Later in life, he owned a machine shop in pekin, il. A small LLC named Illinois machine and tool.^{[citation needed]}