Rees made his debut for Swansea in 1919 and captained his club in the 1922/23 season.
His brother, William "Billo" Rees, was a rugby league footballer who played for Wales and the Great Britain team, and toured Australia.
In 1920 Rees was selected to play against England at St Helens.
Rees played all four games in the 1920 Five Nations Championship in which Wales won the competition.
Rees managed a penalty goal against France in 1923, which was the last score he would achieve for Wales .