"I was kind of bummed out by it last night," Machado said. "When I woke up, it felt a little better, and I came in here and got some treatment and I'm feeling much better. I assume that's a good sign for that. We're just going to feed off that and keep going."
The plan for Machado on Wednesday was to get treatment and see how the back progresses, with nothing definitive on him trying to swing or take some grounders.
"It's a lot better," manager Buck Showalter said. "I look for him to be back shortly, depending on how you define the word shortly."
In Machado's absence, Ryan Flaherty has been manning third.
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.