[2] He enlisted with the Canadian military on April 3, 1916, serving and playing with the 227th Battalion in the Ontario Hockey Association senior division in 1916–17.

He joined the Hamilton Tigers senior team and led them to the 1919 Allan Cup championship before returning home to play four seasons with the Sudbury Wolves of the Northern Ontario Hockey Association.

[5] Green was unanimously voted as team captain prior to the start of the 1924–25 NHL season and his skill and physical style in spite of his small stature made him a fan favourite.

[7] The Tigers flourished on the ice, finishing as the top team in the NHL, and qualifying for the playoffs for the first time in franchise history.

[10] Additionally, the strike led to the demise of Hamilton's entry in the NHL as the team and players were sold and became the New York Americans for the 1925–26 season.

[5] Late in his second season with the Americans, Green suffered a dislocated kidney during a game and was sent to hospital in critical condition.

[14] He left the NHL to coach the Duluth Hornets of the American Hockey Association for three seasons between 1928 and 1931, appearing in three games, and with the Tulsa Oilers in 1931–32.