"I played catch yesterday it was a lot better," Cahill said before Tuesday night's game. "Just kind of monitor it, make sure it's good."
For now Cahill is taking things slow, just playing catch from around 90 feet.
"He might throw a bullpen sometime this week," D-backs manager Kirk Gibson said.
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.