Following school he began playing for the Ponsonby player in the Auckland Rugby League competition, Delgrosso was first selected for the New Zealand side in 1921.

[4] In October of that year he also played for the Auckland Provincial team against the touring Queensland side.

He kicked a conversion and 3 penalties however Auckland was trounced by 54 points to 14 against an outstanding opponent.

[5] In the 1927 season he scored 43 points for Ponsonby which was the 4th highest in the competition however he did not play in any of the Auckland representative matches.

[8] Delgrosso was accused off failing to get one of his sent off teammates to leave the field, throwing mud at the referee and using foul language.

At a management committee meeting in March, 1930 they decided to remit the remainder of his suspension after he apologised for his actions.

[9] He began his playing career again at the beginning of the 1931 season and top scored through the first grade championship and Roope Rooster competitions with 70 points from 35 goals.

They had a son, Francis Dominic Delgrosso (1924-2005), who served during World War II.