The 13-year Minor League veteran has appeared in only 22 Major League games with the Twins, D-backs and Blue Jays, and he hasn't pitched in the Majors since 2012. In 24 2/3 big league innings, Korecky owns a 2-0 record and 7.30 ERA.
Rasmussen will return to Buffalo after tossing two scoreless innings over four relief appearances for the Blue Jays. The 25-year-old lefty recorded a 2.65 ERA in 13 appearances for the Bisons this season.
Adam Berry is a reporter for MLB.com. Follow him on Twitter at @adamdberry. This story was not subject to the approval of Major League Baseball or its clubs.