The Tigers optioned Bristo to Triple-A Toledo following Wednesday's 3-2 win over the Rangers, Chris McCosky of The Detroit News reports.
The move frees up a spot on the 26-man active roster for right-hander Reese Olson, who will be called up from Triple-A to start Friday's series opener against the White Sox. Bristo made just one appearance during his short stay in the Detroit bullpen.