Nate McLouth went 3-for-5 with two doubles, a steal and two runs scored against the Tigers on Wednesday.
David Ross will visit concussion specialist Dr. Mickey Collins on Thursday in Pittsburgh.
Prince Fielder went 0-for-4 on Wednesday and is without a homer since June 4.
Chris Perez (shoulder) will not be activated from the disabled list this Friday.
Astros first-round pick Mark Appel is expected to make several minor league starts this season.
Brett Lawrie (ankle) took grounders and some light batting practice on Wednesday afternoon.
Jose Reyes (ankle) will join Triple-A Buffalo on Friday to continue his rehab assignment.
An MRI taken Wednesday on Brandon Morrow's troublesome right forearm showed no major damage.