All played post 1990. These were only their freshman + sophomore stats.

Running Back A
Freshman: 432 yards, 4.7 YPC, 10 TDs
Sophomore: 479 yards, 3.7 YPC, 7 TDs

Running Back B
Freshman: 299 yards, 4.2 YPC, 4 TDs
Sophomore: 789 yards, 5.0 YPC, 6 TDs

Running Back C
Freshman: 520 yards, 6.0 YPC, 6 TDs
Sophomore: 1,004 yards, 5.1 YPC, 11 TDs

Running Back D
Freshman: 119 yards, 7.0 YPC, 0 TDs
Sophomore: 1,130 yards, 7.5 YPC, 13 TDs

Running Back E
Freshman: 733 yards, 5.7 YPC, 11 TDs
Sophomore: 1,307 yards, 5.2 YPC, 13 TDs