Green was a foundation player for South Sydney being a part of the club's first ever season and playing in their first ever game.
South Sydney defeated Norths 11–7 at Birchgrove Oval with Green scoring one of the club's first tries.
Souths went on to claim the inaugural minor premiership in 1908 and reach the first NSWRL grand final against Eastern Suburbs.
Green played at prop as Souths claimed their first premiership winning 14–12 at the Royal Agricultural Society Grounds in front of 4000 spectators.
In 1909, Green played 10 times for the club as Souths claimed their second premiership in a row against Balmain in controversial circumstances.