Complex sentence: He was the Heisman Trophy runner up in 2000 and helped lead the Sooners to an undefeated regular season and a national championship victory over Florida State in the 2001 Orange Bowl.
Split into simpler sentences: He was the Heisman Trophy runner up in 2000. Heupel led the Sooners to an undefeated regular season and a national championship victory over Florida State in the 2001 Orange Bowl.