Tigers pitcher Justin Verlander is expected to throw a "lengthy" bullpen session on Friday, which will be very similar to a simulated game, according to MLB.com.
Verlander is expected to throw 45-50 pitches of a warmup routine, cool down and then throw 15-20 pitches in the bullpen, according to manager Brad Ausmus.
"We just want to make sure that after he's thrown off the mound and he gets back, that he still feels OK," Ausmus said.
Verlander is yet to throw this season while battling a triceps injury.