Hardy missed two games last year with the issue and said it was much worse the other times he's had spasms than the most recent flare-up.
"Before that, it [hasn't been since] 2009 in Milwaukee that I had them," Hardy said. "It's been a while, so I feel like I've done a pretty good job of doing my low-back exercises. It could have turned into a two-week thing and so it probably was the smart thing to do, take yesterday off."
Hardy went 2-for-3 with a walk in Saturday's 7-6 loss to the Tigers and made a run-saving play in the third.
Brittany Ghiroli is a reporter for MLB.com. Read her blog, Britt's Bird Watch, and follow her on Twitter @britt_ghiroli. This story was not subject to the approval of Major League Baseball or its clubs.