ESPN the Mag has short article on what it takes to be a valuable RB in the NFL, called Speed Score. It's a combination of weight and 40 time. A 260 pounder at 4.6 is as valuable as 200 at 4.4. It appears the closer Dixon can get his 40 to 4.5, the more valuable he will be to the NFL. Still thinking 3rd, but great time might get him to 2nd.