The Blue Jays have recalled infielder Jonathan Diaz and right-hander Chad Jenkins from triple-A Buffalo.
Catcher Erik Kratz was optioned to Buffalo and right-hander Sergio Santos was placed on the 15-day disabled list with a sore elbow, retroactive to May 10.
Diaz started at shortstop against the Los Angeles Angels Monday as Jose Reyes got the day off.
Santos, who lost his job as closer after blowing back-to-back save chances earlier this season, is 0-2 with a 9.00 earned-run average and five saves in 14 appearances.
Acquired from the Chicago White Sox following the 2011 season, Santos was limited to six games in 2012 before undergoing shoulder surgery. His 2013 season was cut short by elbow surgery after 29 games.
Jenkins has made three relief appearances for the Blue Jays this season. He has no record and a 9.00 ERA.
Diaz, who can also play the outfield, has played in 22 games for the Blue Jays, batting .176 with no homers and four runs batted in.
Kratz was batting .231 with two homers and six RBIs in 11 games.