"I'm sure he's anxious and feeling good," Cubs manager Rick Renteria said.
The Cubs wanted Veras to pitch at least two innings Sunday, but he was lifted after throwing 32 pitches (18 for strikes).
Outfielders Justin Ruggiano and Ryan Sweeney, both rehabbing hamstring strains, were continuing to make progress. Ruggiano, who injured his left hamstring on April 23, is hitting off a batting tee and rehabbing at the Cubs' complex in Mesa, Ariz. Renteria said Ruggiano could be close to beginning a rehab assignment.
Sweeney, who strained his right hamstring on May 2, is doing his rehab in Chicago.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.