Arizona manager Torey Lovullo said the decision to halt Souza's rehab for a few days was more precaution than anything else. Souza had been optimistic about coming off the disabled when the D-backs return home April 17.
"I do not consider this a setback whatsoever," Lovullo said. "It's just that we're monitoring our athletes and getting the feedback from them. We're just going to take a few days down and see where we're at."
Souza is also leaving the ballclub for three days later this week to attend to a family matter.
"We felt like the combination of that with the next couple of days will be really good for his body," Lovullo said. "At this point the next homestand might be a little bit of a challenge, but he is trending in a very positive direction."
• Infielder Jake Lamb took dry swings and ran before Monday's game. He is expected to take soft tosses in the batting cage Tuesday in the next step back from a sprained left AC joint. "Everything is going in a good direction for him," Lovullo said.
• Right-hander Randall Delgado will make another rehab appearance with Class A Advanced Visalia on Tuesday. Delgado threw nine pitches in one inning Saturday.
Michael Wagaman is a contributor to MLB.com and covered the D-backs on Monday.