McCarthy believes he is close to beginning to throw off the mound in a bullpen session.
"Some point this week, probably," he said.
McCarthy has not suffered any side effects from medication he's taking after suffering a seizure a couple of weeks ago. The only lingering problem from the seizure is that McCarthy still has not recovered feeling in half of his tongue.
• Closer J.J. Putz threw a bullpen session Monday and could be close to starting an injury rehab assignment.
"I feel great," Putz said. "Everything is coming out good."
D-backs manager Kirk Gibson said Putz might throw a live batting practice session before starting a rehab assignment.
• Gibson said several times during the series with the Padres that resulted in a sweep that he was unhappy with the approach of his hitters.
"I probably should have given more credit to the Padres' pitchers," Gibson said. "They really pounded the zone, got ahead and then made good quality pitches on the edges."
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.