MJD is the only player that did it last year, for rushing.
The list below ranks the tailbacks who handled the biggest share of their team's rushing load in 2011. As mentioned above, Gore ranked fifth overall in total rushes.
1. Maurice Jones-Drew, Jaguars
343/489, 70 percent
2. Chris Johnson, Titans
262/376, 69 percent
3. Michael Turner, Falcons
301/453, 66 percent
4. Marshawn Lynch, Seahawks
285/444, 64 percent
5. Steven Jackson, Rams
260/409, 64 percent
6. Ray Rice, Ravens
291, 459, 63 percent
7. Beanie Wells, Cardinals
245/389, 63 percent
8. LeSean McCoy, Eagles
273/450, 61 percent
9. Cedric Benson, Bengals
273/455, 60 percent
10. Shonn Greene, Jets
253/443, 57 percent
11. Frank Gore, 49ers
282/498, 57 percent
12. Michael Bush, Raiders
256/466, 54 percent
13. LeGarrette Blount, Buccaneers
184/346, 53 percent
14. Rashard Mendenhall, Steelers
228/434, 52 percent
15. Ryan Matthews, Chargers
222/436, 50 percent
16. Arian Foster, Texans
278/546, 50 percent
17. Adrian Peterson, Vikings
208/448, 46 percent
18. Reggie Bush, Dolphins
217/469, 46 percent
19. Willis McGahee, Broncos
249/546, 45 percent
20. Matt Forte, Bears
203/456, 45 percent
21. Fred Jackson, Bills
170/391, 43 percent
22. Ahmad Bradshaw, Giants
171/411, 42 percent
23. BenJarvus Green-Ellis, Patriots
181/438, 41 percent
24. DeMarco Murray, Cowboys
164/408, 40 percent
25. Peyton Hillis, Browns
161/415, 38 percent
26. Roy Helu, Redskins
151/400, 38 percent
27. Donald Brown, Colts
134/382, 35 percent
28. DeAngelo Williams, Panthers
155/445, 35 percent
29. Ryan Grant, Packers
134/395, 34 percent
30. Mark Ingram, Saints
122/431, 28 percent
31. Thomas Jones
153/487, 31 percent
32. Jahvid Best, Lions
84/356, 24 percent
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source:
http://blogs.sacbee.com/49ers/archives/2012/06/49ers-game-plan-keep-gore-fresh-for-playoff-run.html