Kiper's top five players by position

First off: Earlier today, my colleague Todd McShay and I released Mock Draft 4.0.

This list, which tracks the best draft-eligible prospects at each position, sees a lot of change from last week. Some notable adjustments: Joe McKnight returns to the RB list; John Conner from Kentucky is now my top fullback; Jermaine Gresham from Oklahoma has retaken the No. 1 TE slot -- and there's even been a shift in the punter category, where I added two names.

There will be two more editions of these charts: April 14 and April 21. You can expect a great deal more change then as well.