It was a logical choice, since Ashley, just called up from Triple-A Colorado Springs on Tuesday after completing his 10th Minor League season, had caught many of right-hander Ariel Pena's outings there. Pena, another September call-up, made his first Major League start on Wednesday and went five innings, allowing two runs on four hits with four strikeouts in a no-decision.
The Brewers' other backup catcher, Martin Maldonado, was already scheduled to start Thursday's series opener in Pittsburgh.
"I think it's good they have safety measures now," Lucroy said.
Brewers director of medical operations Roger Caplinger was involved in writing Major League Baseball's concussion protocol, which was implemented before the 2011 season and put in place a procedure for evaluating players' readiness to return from a head injury while adding a new, seven-day disabled list.
Lucroy entered that protocol on Tuesday night and said he passed all of the vision and memory tests. But he cannot return to action for the Brewers until cleared by a doctor.
"Most likely a couple of days," manager Craig Counsell said.
Adam McCalvy is a reporter for MLB.com. Follow him on Twitter @AdamMcCalvy, like him on Facebook and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.