Editor's note: This story has been updated. SportsDay's Dallas Cowboys beat writers examined the best draft picks by the team at each position since 1967, the year the AFL and NFL stopped drafting the same players. Below are the top running-back draft picks of all time.To view other series installments: QB | RB | WR/TE | OL | DL | LB | DBThe bestEmmitt Smith College: FloridaDraft spot: 1990, first round (No.