Hellickson, who underwent elbow surgery in January, threw 5 2/3 innings for Triple-A Durham, allowing two runs off seven hits. He walked two and struck out four.
Shortstop Yunel Escobar fielded grounders on Friday, and Maddon said he's nearing a return from the right shoulder soreness that placed him on the disabled list retroactive to June 25.
"He's doing well," Maddon said. "He's feeling a lot better."
Maddon didn't rule out the possibility of a rehab assignment for Escobar but added that he shouldn't need much more than the requisite 15 days on the disabled list.
Bill Chastain is a reporter for MLB.com. Matt Slovin is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.