Bristo cleared waivers and was outrighted to Triple-A Toledo on Sunday.
Bristo was designated for assignment by the Tigers on Sunday.
The Tigers returned Bristo to Triple-A Toledo following Wednesday's doubleheader against Atlanta.
The Tigers called Bristo up from Triple-A Toledo to serve as their 27th man for Wednesday's doubleheader with Atlanta.
The Tigers optioned Bristo to Triple-A Toledo following Wednesday's 3-2 win over the Rangers, Chris McCosky of The Detroit News reports.
Bristo was recalled from Triple-A Toledo by the Tigers on Tuesday, Jason Beck of MLB.com reports.
The Tigers claimed Bristo off waivers from the Rays on Monday, Marc Topkin of the Tampa Bay Times reports.
Bristo was designated for assignment by the Rays on Saturday.
Bristo was optioned to Triple-A Durham by the Rays on Friday, Neil Solondz of the Rays Radio Network reports.
Bristo struck out four and walked one over three hitless innings Thursday, earning a save in a 9-3 victory over the Red Sox.