Yates has a 4.15 ERA in four appearances for the Rays this season.
In a corresponding move, lefty Enny Romero was optioned to Durham following Monday night's 8-5 loss to the Blue Jays.
Yates is 0-1 with a 9.00 ERA in eight appearances for the Bulls this season. Earlier this season, he spent time on the disabled list with a strained right pectoral.
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.