[1] Trigilio served in the United States Army Air Forces during World War II.

[2][3] Trigilio signed with the Los Angeles Dons of the All-America Football Conference in 1946.

[4] He appeared in seven games, starting one, for the Seahawks during the 1946 season, recording 38 carries for 124 yards and one touchdown.

[3] Trigilio was offered a contract by the Colts but declined it to instead sign with the Hawaiian Warriors of the Pacific Coast Professional Football League (PCPFL) on August 8, 1947.

[7] Trigilio married Lorraine (nee Silva) while stationed in Hawaii during the war.