Hanson, 25, was most recently a member of the Toronto Maple Leafs. He played six games with the Leafs last season and a total of 42 over parts of the past three seasons, registering 3 goals and 6 assists. In 58 games with the AHL's Toronto Marlies last season, Hanson had 13 goals and 21 assists. He will likely see most of his playing time this season with the Capitals' AHL affiliate, the Hershey Bears.
Hanson is a Glen Falls, N.Y., native who played four seasons at Notre Dame.