As a professional, Masoe made history becoming the first Samoan boxer to win a major world title, defeating Kenyan born Evans Ashira on May 1, 2004 for the regular WBA world middleweight crown via second round Technical Knockout.
Represented American Samoa as a Welterweight at the 1988 Summer Olympic Games at Seoul.
His results were: Competed as a Light Middleweight for American Samoa in the 1992 Summer Olympic Games at Barcelona.
Results were: Competed as a Light Middleweight for American Samoa in the 1996 Summer Olympic Games at Atlanta.
[2] Masoe moved to New Zealand where he began his pro career in 1997 and captured the Vacant WBA Middleweight Title by upsetting undefeated Evans Ashira in 2004.