Spiller, Best lacking ideal size 

February, 26, 2010

Two of the top three running backs on our board measured on the smaller side. Clemson's C.J. Spiller checked in at 5-foot-10⅝ and 196 pounds, while California's Jahvid Best was 5-10⅛ and 199.

Size is not as much of an issue for Spiller, who plays a versatile role that includes kickoff returns. Best, however, dealt with nagging injuries throughout his college career and there are questions about whether he has the frame to take a pounding as an inside runner. Medical exams, including evaluation of the serious concussion Best suffered late in the 2009 season, will also be closely scrutinized.