Career
Mattson played in the Atlanta Braves minor league system in 1991, playing for both the Macon Braves and the Durham Bulls. In 1992, he played for the Beloit Brewers. In 1995 and 1996, Mattson played for the Memphis Chicks in the San Diego Padres organization.
In 1998 and 1999, he played for the Osaka Kintetsu Buffaloes in Japan"s Nippon Professional Baseball.
He also played for the Olmecas de Tabasco of the Mexican League in 2001.
