[6] That same year, Serio played on a USA U-23 Team participating at the Australian Junior National Games for the Disabled in Sydney.

He also plays on the U.S. Paralympics Men's Wheelchair Basketball Team, which came in second place at the World Championships in Amsterdam in the summer of 2006.

[10] In the summer of 2007, the U.S. National Team won a gold medal at the Parapan American Games in Rio de Janeiro.

Since that disappointing Paralympics, the U.S. National Team has taken the gold medal at the 2009 America's Cup in Richmond, Canada[12] and finished third at the 2010 Wheelchair Basketball World Championship in Birmingham, England.

[3] Along with sitting volleyball player Nicky Nieves, Serio served as one of two flag bearers for Team USA at the 2024 Summer Paralympics opening ceremony in Paris.