Cleveland Browns Clarke was selected by the
Cleveland Browns in the fifth round (61st overall) of the
1956 NFL draft. He played with the team for three seasons, from
1957 to
1959, even though he stood on the sidelines during the first two. He did not start any games his rookie year, and had only four receptions. He started one game each of the next two years, with three receptions in each of those years; accumulating a total of just 10 catches during those three years at offensive right end. He was left unprotected in the
1960 NFL expansion draft.
Dallas Cowboys Clarke was selected by the
Dallas Cowboys in the 1960 NFL Expansion Draft. His coaches at Colorado and Cleveland criticized his blocking, but the Cowboys were still intrigued by the 6 ft 1 in (1.85 m), 215-pound (98 kg) player. Instead of picking at his deficiencies,
Tom Landry chose to accentuate his strengths. The coach appreciated his speed, soft hands and his ability to run precise routes, so he was converted into a
split end. Mostly a backup behind
Billy Howton and
Fred Dugan, he appeared in 8 games (3 starts), registering 9 receptions, 290 yards, 3 touchdowns and a 32.2-yard average. Additionally, he began a streak of seven consecutive games with at least a touchdown reception, which still stands as a Cowboys record shared with
Bob Hayes (
1965–
1966),
Terrell Owens (2007), and
Dez Bryant (2012). He turned out to be the Cowboys' first bona fide long-ball threat—before "Bullet" Bob Hayes joined him. Hayes even credits Clarke for teaching him the proper way to catch "the bomb"—the long pass. He is also credited as the first African American star athlete, on a Cowboys team that played in a then racially divided Dallas. It was the team record for receiving yards in a game until broken by Bob Hayes in 1966, and is still third best (as of 2025). On September 23, 1962, Clarke was part of an infamous play where, for the first time in an NFL game, points were awarded for a
penalty. The Cowboys were
holding in the
end zone on a 99-yard touchdown pass from
Eddie LeBaron to Clarke, and the
Pittsburgh Steelers were awarded a
safety, helping them win the game 30–28. He was close to breaking the
NFL season touchdown receiving record until missing the last 2 games with an injury, only playing in 12 games rather than the full 14. In
1964, he caught a career-high 65 passes (then a franchise record, now tied for 52nd) 973 yards, 5 touchdowns and received first-team
All-Pro honors from the
Associated Press, and second-team honors from the
Newspaper Enterprise Association and
United Press International. From 1961-64, Clarke led all NFL receivers in total touchdown receptions. In
1965, he was moved to
tight end and started all 14 games, in place of 1964 tight end starter
Pettis Norman. Clarke was second on the team behind Bob Hayes with 41 receptions for 682 yards and 4 touchdowns. In 1966, however, Norman was moved back to starting tight end and Clarke was the backup tight end. Clarke remained productive and became a clutch third down receiver, recording 26 receptions for 355 and 4 touchdowns (while Norman caught only 12 passes for 144 yards). He held the franchise record for most touchdowns in a season by a receiver with 14 from his
1962 season, which stood for 45 years until
2007, when it was broken by Terrell Owens. Dez Bryant exceeded both in 2014, in 16 games. He has the third most multi-touchdown games in team history (9), behind Bob Hayes (15) and Dez Bryant (10). It has also been stated he had the team record for the most career receiving multi-touchdown games with 9, until it was broken by Dez Bryant in
2014. In his career, Hayes had scored two rushing touchdowns and three touchdowns on punt returns, to go along with his 71 receiving touchdowns. He retired after the
1967 NFL Championship Game against the
Green Bay Packers, in what is now known as the “
Ice Bowl”, won by the Packers, 21–17. During the game, wind chill temperatures reached as low as -48 degrees. One of the Packers players,
Boyd Dowler, had been Clarke's quarterback at Colorado. Dowler caught two touchdown passes that day, while Clarke had two receptions, and one rushing attempt for negative yardage. Clarke was the last member of the original Dallas Cowboys team to retire. ==NFL career statistics==