The lefty split this season with Toronto and Triple-A Buffalo, going 1-1 with a 4.76 ERA in five Major League games (four starts) and 1-3 with a 2.44 ERA in nine Minor League starts.
He is 29-24 with a 4.78 ERA in 107 Major League games (77 starts) with the Red Sox, Cubs and Blue Jays.
Cash Kruth is a reporter for MLB.com. Follow him on Twitter at @cashkruth. This story was not subject to the approval of Major League Baseball or its clubs.