Hardy -- whose MRI on Tuesday came back normal -- hopes to be playing at some point this weekend and is aiming to take batting practice on Thursday.
"I'm hoping tomorrow [he plays], but it's probably not realistic," manager Buck Showalter said. "I just want him to be able to play without any mental restrictions or physical restrictions."
Brittany Ghiroli is a reporter for MLB.com. Read her blog, Britt's Bird Watch, and follow her on Facebook and Twitter @britt_ghiroli. This story was not subject to the approval of Major League Baseball or its clubs.