As a sophomore, he had 2 scores in eight seconds to help upset West Texas State University. As a senior, he posted 592 rushing yards (led the conference) and 2 touchdowns. He finished his college career with 936 rushing yards, 142 receiving yards and 8 touchdowns.
The Washington Redskins claimed him off waivers on July 29, 1966.[2] His best game came against the New York Giants, when both teams set the NFL record for most combined points (113) in a game, on November 27. Fourteen different players scored, with Whitfield accounting for two rushing touchdowns and one by reception.[3]
Although he was mostly used as a change of pace running back, he led the Redskins in rushing in 1966 (472 yards) and in 1967
(384 yards). On September 16, 1969, he was cut and later signed to the taxi squad. He was waived on November 6.[4]
On August 2, 1971, he was signed by the Denver Broncos. Even though he was the second leading rusher in preseason behind Floyd Little, he was released on September 16.
Whitfield worked for New York Life Insurance until his retirement.
A. B. Worked at Satellite West Jr. High School in Brooklyn, NY from 1978 to 1982 as a gym teacher.