The averages say NFL RBs last for 6 seasons. You draft with this in mind. I would also recommend that you take a closer look at the NFL. Lendale White is listed at 6-2 235. He also looks as if he could probably lose a few pounds. In the NFL, right now, these guys are all succesful. Shaun Alexander 5-11 225 Larry Johnson 6-1 230 Edgerrin James 6-0 215 LaDainian Tomlinson 5-10 220 Rudi Johnson 5-10 225 Willis McGahee 6-0 228 Reuben Droughns 5-11 215 Cadillac Williams 5-11 217 Steven Jackson 6-2 231 Mike Anderson 6-0 230 Dominick Davis 5-9 220 Ronnie Brown 6-0 230 All of these guys were in the top 20 rushing in the NFL. Doesn't include Jamal Lewis, Deshawn Foster, Chris Brown, Ricky Williams, Corey Dillon or Antwon Smith. All are starters for there teams and all have enjoyed success in the NFL. The averages say that size is still in for RBs.