Right-hander Jeremy Hellickson has joined the Nationals on a minor league contract and an invitation to spring training in the majors, sources told ESPN's Jerry Crasnick.

Hellickson, who turns 31 on April 8, would get a $2 million, one-year contract if added to the 40-man roster and would have a chance to make an additional $4 million in performance bonuses, a source told The Associated Press.