[4] In 1944, DaGrosa became the line coach and chief assistant at Holy Cross, succeeding Lud Wray.
[2] That year, DaGrosa led Holy Cross to an 8–1 record, including a 46 to 0 defeat of rival Boston College at Fenway Park.
[6][7] In 1947, Holy Cross started training camp with only ten players due to graduation and transfers.
[11] The Crusaders defeated Boston College 20 to 6 in his final game as head coach to finish the season 4–4–2.
[12] On March 7, 1948, Temple University announced that DaGrosa would serve as lead assistant to head football coach Ray Morrison.
DaGrosa called the suspension "unfair and arbitrary", as he had recommended to the Indiana commission that the fight be canceled due to Walcott's ill health.