The 31-year-old right-hander is coming off an injury-plagued season in which he went 0-3 with an 8.57 ERA in 21 innings over 26 appearances for the Blue Jays. Injuries limited Santos to only 61 appearances for Toronto over the last three seasons, but he did manage to compile a 1.75 ERA in 25 2/3 innings in 2013.
Santos was at his best as the White Sox closer in 2011, putting together a 3.55 ERA with 30 saves and 92 strikeouts in 63 1/3 innings. For his career, Santos is 7-12 with a 3.89 ERA in 180 appearances.
Santos was taken by the D-backs in the first round of the 2002 Draft, eventually signed as a free agent with the White Sox in 2009 and was then traded from Chicago to Toronto in 2011.
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.