He was voted captain for the 1918 team but was serving in France in World War I (there was no football at Colgate in 1918).

The Racine Legion team would become a member of the National Football League in 1922 and would remain part of organization — despite significant financial losses — through the 1924 season.

As a member of the Horlick-Legion team, Gillo led the NFL in scoring in 1922 with 52 points.

He held the NFL record for longest field goal with a 55, 56, or 57 yard kick against the Packers in 1922.

He spent 21 years as a teacher in a prep school in Milwaukee and was the head of the biology department at the time of his death.