Career
He was drafted by the Philadelphia Eagles in the fourth round of the 1971 NFL Draft and played for one season for the team He played for two seasons with the New Orleans Saints. He played college football at Texas.
Feller was nicknamed "Happy" because he smiled often as a child.
Feller played college football for the Texas Longhorns. He beat out Rob Layne, who started in 1967, for the starting kicker job before the start of the 1968 season.
In 1968, Feller went 8-of-16 for field goals and 30-of-32 for extra point attempts. He made a 53-yarder against Oklahoma, a school record.
In the season-opener in 1969 against the California Golden Bears, Feller kicked a 32-yard field goal in the third quarter and went two-for-two for extra point attempts.
In week two against Texas Technical, he converted all seven extra points. He went seven-for-seven for extra point attempts on October 4 against Navy. In the Red River Shootout against Oklahoma on October 11, Feller kicked two field goals of 27 and 21 yards and converted all three extra point attempts as the Longhorns beat the Sooners 27–17.
He had a 24-yard field goal and converted all four extra point attempts against Rice on October 25.
Feller made a 32-yard field goal and converted all six extra point attempts against SMU on November 1. Against Baylor on November 8, he made all five extra point attempts.
He went five-for-six on extra point attempts against Texas Christian University on November 15. Against the Texas Agricultural and Mechanical Aggies on November 27, Feller made a 43-yard field goal and converted four-of-seven extra point attempts.
In the Cotton Bowl Classic against Notre Dame on January 1, Feller went three-for-three for extra point attempts.