Complex sentence: Barry Sanders is the only college player to accumulate more all-purpose yards than the 3,159 that Woodhead gained in 2006, as he gained 3,250 as a junior at Oklahoma State in 1988, when he won the Heisman Trophy.
Split into simpler sentences: Barry Sanders is the only college player to accumulate more all-purpose yards than the 3,159 that Woodhead gained in 2006. Sanders managed 3,250 as a junior at Oklahoma State in 1988, when he won the Heisman Trophy.