McCullouch was drafted by the
Detroit Lions as their
second pick of the first round (24th overall), having drafted Landry with the 11th pick, on January 30, 1968. As the world record holder and
National Champion in the hurdles, McCullouch was a favorite for the Olympic gold medal. In 1968, the Olympic Trials held a Semi-Final event a week after the National Championships at the end of June. There, McCullouch hit several hurdles and finished poorly in 7th place. The final
Olympic Trials and
Olympics were scheduled for later in the year, September 13 and mid-to-late October respectively, well into the football season which started on September 15. McCullouch himself recalled tripping on the seventh hurdle. He still could have competed for the Olympics in the relays, and there was some thought he still might be placed on the team for the hurdles, but he did not believe the latter to be fair. He decided not to go to the Olympics, and rather to join the Lions, and did not later regret his decision. And while the Olympics meant glory, there was no money to be made in the amateur days of the Olympics. McCullouch had a tough choice between his two sports.
Willie Davenport went on to win both the trials and the Olympics. A year later, Davenport finally beat McCullouch's world record. By the time the Olympic races rolled around, Detroit had already played 5 official games of the
regular season and was about to take the lead in the Central Division. By that time, McCullouch had already amassed 419 yards receiving and scored three touchdowns, including an 80-yard reception, from the Lions' other first round pick Greg Landry, in their first NFL game. In only the sixth game of his rookie season, he scored two touchdowns against the defending champion Packers in the first quarter. He finished the season with 680 yards receiving on 40 receptions, plus another 13 in 3 rushing attempts, 5 touchdowns and a 16.1-yard per touch average (in 43 touches) and was named the
NFL Rookie of the Year in 1968. During his first three years with the Lions, he had surgery on each foot and a surgery to remove bone chips from a knee, and he never regained his full speed. After that, he was a player-assistant with the
Portland Thunder of the
World Football League for a short time. == Personal life ==