The 27-year-old was released by the Chicago Cubs last weekend. His deal with the Blue Jays was announced Thursday.
Doubront has a 28-23 record and a 4.78 ERA in five seasons with Boston and the Cubs, who obtained him from the Red Sox last July 30 for a player to be named that later was announced as minor league infielder Marco Hernandez. Doubront had an 11.57 ERA in four spring training appearances this year, allowing nine runs and 17 hits in seven innings.
He had a one-year contract with the Cubs worth $1,925,000 that was not guaranteed and receives $473,361, which is 45 days termination pay.