1. LaDainian Tomlinson, SD
Upside: plays behind a good offensive line, Michael Turner is gone, easiest rush defense schedule, the most consistent running back in the league
Downside: showed injury issues at the end of last season
2. Adrian Peterson, MIN
Upside: sophomore year, good offensive line
Downside: scored no touchdowns in over half the games he started, extremely streaky, shares the carries with Chester Taylor, injury issues last season
3. Brian Westbrook, PHI
Upside: prime age, most versatile back in NFL as a receiving threat
Downside: mediocre offensive line, tough rushing schedule
4. Joseph Addai, IND
Upside: just third year in NFL, decline in passing options, great offensive line
Downside: tough rushing schedule, decline in yards per carry since rookie season
5. Marion Barber, DAL
Upside: still developing, no more Julius Jones to share carries with, great offensive line blocking for him
Downside: difficult rushing schedule, what will Felix Jones' role be in the offense? Tony Sparano left office
6. Steven Jackson, STL
Upside: still developing, productivity with a healthy team
Downside: injury issues last season, horrible offensive line, Brian Leonard's role?
7. Clinton Portis, WAS
Upside: prime age, consistently productive, new head coach?
Downside: injury issues, tough rushing schedule, new head coach?
8. Ryan Grant, GB
Upside: still developing, ridiculous productivity, good o-line, stronger emphasis on running game if Rodgers starts
Downside: last season a fluke year? how will he fare against the young competition in Green Bay?
9. Frank Gore, SF
Upside: still developing, young and improving offensive line, easy rushing schedule
Downside: what role will DeShaun Foster play as the No. 2 back? Martz will rely on passing attack more
10. Marshawn Lynch, BUF
Upside: second year in NFL, easy rushing schedule, rookie productivity
Downside: injured last season, off field issues, Fred Jackson surprise?
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