993
993 yards.
Julius Jones with 262 yards vs. Pittsburgh in 2003
Randall Cunningham's highest rushing yard season was in 1990 when he had 942 rushing yards.
1863 rushing yards in the 1963 season.
Kevin Jones with 689 rushing yards on 181 carries.
Ricky Williams with 1853 rushing yards in the 2002 season.
Herschel Walker
As of the 2008 season: 1) Randall Cunningham - 4,928 rushing yards and 29,979 passing yards 2) Steve Young - 4,239 rushing yards and 33,124 passing yards 3) Fran Tarkenton - 3,674 rushing yards and 47,003 passing yards 4) Steve McNair - 3,590 rushing yards and 31,304 passing yards 5) John Elway - 3,407 rushing yards and 51,475 passing yards 6) Donovan McNabb - (through 1 game of the 2008 season) 2,965 rushing yards and 25,765 passing yards 7) Jim Harbaugh - 2,787 rushing yards and 26,288 passing yards
O.J. Simpson with 2003 rushing yards for the 1973 Buffalo Bills.
In 2005, McGahee led in rushing yards with 1,247, with Williams coming way behind in second with only 161 yards rushing.
In college, Earl Campbell finished with 4,444 rushing yards and Billy Sims ended up with 3,813 yards. In the NFL, Earl Campbell had 9,407 rushing yards in an eight season career and Billy Sims had 5,106 yards in a five season career.
Through the 2008 season, that is Edgerrin James with 1,709 rushing yards in the 2000 season.