Diamondbacks manager Torey Lovullo said Tuesday that Kelly has undergone additional testing on his injured back, including a CT scan, Steve Gilbert of MLB.com reports.
Kelly -- who is battling mid-back tightness -- has also had an MRI. Lovullo said Monday that Kelly was feeling good, so the additional tests could be a precautionary measure. The Diamondbacks hope to know more about the veteran right-hander's condition by Wednesday.