Complex sentence: Mark Stepnoski (born January 20 near Pittsburgh, 1967) is a former American Football offensive lineman who played for the Dallas Cowboys (1989-1994,1999-2000), and the Houston Oilers (1995-1998).
Split into simpler sentences: Mark Stepnoski (born January 20 near Pittsburgh, 1967) is a former American Football offensive lineman. Stepnoski's pro career in the NFL was spent with the Dallas Cowboys (1989-1994,1999-2000), and the Houston Oilers (1995-1998).