 That game film was sent to Cincinnati Bengals head coach Paul Brown to showcase other players, but Brown saw something in Clark and decided he would draft him if the opportunity came.He was drafted in the 12th round of the 1973 NFL Draft by the Cincinnati Bengals and became a fullback.Despite inexperience at the position, he was a breakout star with 988 yards in 254 carries (a 3.9 average) and eight touchdowns and 45 receptions for 347 yards (a 7.7 average).