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Brown new leader at RB

The Combine has come and gone and results out of Indianapolis have done little to shuffle my rankings of the top five NFL prospects at each position.

The top spot at running back, and the No. 1 position on my Big Board of the top 25 overall prospects, now belongs to Ronnie Brown of Auburn, but no other position had a change at the top of the list. California running back J.J. Arrington is back in the rankings after a strong showing at the Combine, while Alabama guard Evan Mathis, Bowling Green guard Scott Mruczkowski, Georgia defensive end David Pollack and Virginia Tech safety Vincent Fuller are all back in the mix as well.

Three players make their debuts this week: Portland State tight end Tony Curtis, Northwestern defensive tackle Luis Castillo and Nebraska cornerback Fabian Washington. Read on to find out how things fall into order.