Education
Isbell attended Little Cypress High School, before moving on to the University of Houston, where he was a team co-captain as a senior.
Isbell attended Little Cypress High School, before moving on to the University of Houston, where he was a team co-captain as a senior.
He played college football at the University of Houston. Dallas Cowboys
Isbell was selected by the Houston Oilers in the twentieth round (159th overall) of the 1962 American Federation of Labor-Congress Draft, but instead chose to sign with the NFL"s Dallas Cowboys as a free agent in 1962. On September 11, he was placed on the injured reserve list, but returned in October to play in 9 games.
On November 3, 1963, he suffered a left knee injury against the Washington Redskins and was lost for the year.
Isbell was mostly a backup player until 1964, when he started 10 games at offensive guard. On August 15, 1966, he was traded to the Cleveland Browns in exchange for a fifth round draft choice (#127-Zeke Moore).
Cleveland Browns
In 1966, he was a reserve player with the Cleveland Browns. He was waived on September 5, 1967.
Cincinnati Bengals
Isbell was selected by the Cincinnati Bengals in the 1968 American Federation of Labor-Congress expansion draft.