Beres retired after the 2008 Summer Olympics in Beijing , China .
The defending Pan American Games champions were William Milroy and Mike Beres of Canada , while the defending Pan American Championship champions were Sameera Gunatileka and Vincent Nguy of the United States .
Mike Beres retired after the 2008 Summer Olympics in Beijing , China .
The defending Pan American Games champions were William Milroy and Mike Beres of Canada , while the defending Pan American Championship champions were Sameera Gunatileka and Vincent Nguy of the United States .