Career
He had brief major league stints with the Chicago Cubs in 2001 and 2002. In 2007 he pitched for the Yokohama BayStars of the Japanese Central League. He began 2008 with the Tigres de Quintana Roo of the Mexican League.
On August 13, he signed with the Baltimore Orioles, who assigned him to the Norfolk Tides of the Triple-A International League.
On March 20, 2009, Chiasson was released by the Orioles. "Allowing the two Minor League veterans (the other one was Guillermo Quiroz) to try to hook on with another club before the end of spring.".