Education
Blackwell attended Cuero High School, before moving on to the University of Houston.
Blackwell attended Cuero High School, before moving on to the University of Houston.
He played for the Dallas Cowboys and the Kansas City Chiefs. He played college football for the University of Houston. In 1976, he became the starter at running back, registering 934 rushing yards and 8 touchdowns, while posting four 100-yard rushing games and helping the team to a Southwest Conference co-championship.
In the 1977 Cotton Bowl, he rushed for 149 yards, 2 touchdowns, earned offensive Most Valuable Player honors and contributed to a number 4 national ranking, which was the highest in school history.
As a senior, he tallied 1,169 yards rushing (fifth best in school history) and 11 touchdowns, while having six 100-yard rushing games. He finished his college career with 2,467 rushing yards (third in school history), a 5.8-yard average and 21 touchdowns (third in school history).
In 2010, he was inducted into the University of Houston Hall of Honor. Dallas Cowboys
Blackwell was selected by the Dallas Cowboys in the fourth round (110th overall) of the 1978 NFL Draft.
He played in Super Bowl XII. On October 22, 1979, he was waived to make room for John Dutton.
Kansas City Chiefs
In 1980, he signed with the Kansas City Chiefs as a free agent. He was placed on the injured reserve list on August 19. Blackwell worked in the Houston Department of Intercollegiate Athletics.
He was the Texas Southern University athletic director from 2001 to 2008.