The highlight of Sebo's tenure at Penn was the 1959 season, in which the Quakers won their first Ivy League championship. As it turned out, even that wasn't enough to save his job; school officials had already decided before the season that his contract would not be renewed.[4]
He also coached basketball at Alma from 1946 to 1949, tallying a mark of 36–24. After Sebo was fired from his post at Penn following the 1959 season, he became the general manager of the New York Titans, a newly formed team of the upstart American Football League that was renamed as the New York Jets in 1963. Sebo left the Titans in 1962 to become the athletic director at the University of Virginia.[5]