Clem Daniels was signed as an undrafted (by both the NFL and AFL) by the Dallas Texans, but playing behind Abner Haynes in 1960 meant that you weren't going to see much playing time if you were a Halfback.  Daniels was traded to the Oakland Raiders, where he worked his way into the starting rotation, and from 1962 to 1966, he would finish in the top three in All-Purpose Yards.  Daniels went on a four-year streak of AFL All-Star Selections in 1963, and that year The Sporting News would name Daniels their version of the MVP as he was the league leader in Rushing Yards, Yards From Scrimmage and Yards per Reception.  Later in his career, although he was beaten up, he would help Oakland win the 1967 AFL Championship.  

It may seem a lifetime ago, but when Hall of Fame Quarterback Len Dawson was looking for a deep threat, it was Otis Taylor who was the target.  In fact, it was Taylor who caught half of the passes for the Kansas City Chiefs in their Super Bowl IV victory.

From Prairie View A&M, Taylor was a star in the AFL, and a big reason that the Chiefs were very good.  He was their top receiver and rewarded them with a 1,297 yard season in 1966.  He was still productive after the NFL/AFL merger and led the league in receiving yards with 1,110 in 1971.