9:53 AM - Sean Guenther (DET) Toledo placed Guenther on its 7-day injured list May 30 due to an unspecified injury.

4:24 PM - Sean Guenther (DET) Tigers optioned Guenther to Triple-A Toledo on Friday, Evan Petzold of the Detroit Free Press reports.

1:17 PM - Sean Guenther (DET) will serve as the Tigers' opening pitcher for Monday's game against the Cardinals, Chris McCosky of The Detroit News reports.

8:45 AM - Sean Guenther (DET) tossed two scoreless innings of relief in Sunday's 7-0 win over the Orioles. He allowed one hit and struck out three.

3:19 PM - Sean Guenther (DET) Tigers recalled Guenther from Triple-A Toledo on Friday, Evan Woodbery of MLive.com reports.

2:21 PM - Sean Guenther (DET) (back) will begin a rehab assignment with Single-A Lakeland on Thursday, Evan Woodbery of MLive.com reports.

12:09 PM - Sean Guenther (DET) Tigers announced Wednesday that Guenther, who was placed on Triple-A Toledo's 7-day injured list March 28 due to lumbar spine inflammation, is scheduled to throw a bullpen session Friday, Cody Stavenhagen of Athletic reports.

8:42 AM - Sean Guenther (DET) was optioned to Triple-A Toledo on Monday, Chris McCosky of The Detroit News reports.

12:08 PM - Sean Guenther (DET) Tigers recalled Guenther from Triple-A Toledo on Thursday.

11:59 AM - Sean Guenther (DET) Tigers optioned Guenther to Triple-A Toledo on Sunday.

3:26 PM - Sean Guenther (DET) Tigers selected Guenther's contract from Triple-A Toledo on Thursday, Cody Stavenhagen of Athletic reports.

2:36 PM - Sean Guenther (DET) (elbow) has made two relief appearances for Double-A Erie since being activated from the 7-day injured list May 29, covering two innings and striking out a batter while allowing one earned run on three hits and one walk.

6:45 PM - Sean Guenther (DET) (elbow) cleared waivers and was outrighted to Triple-A Toledo on Tuesday.

2:41 PM - Sean Guenther (DET) (elbow) has resumed throwing off flat ground from 75 feet and is expected to be ready to pitch off a mound by the end of spring training, Evan Petzold of the Detroit Free Press reports.

2:15 PM - Sean Guenther (DET) Tigers claimed Guenther (elbow) off waivers from the Marlins on Wednesday.