Roberts needed just 10 pitches (seven strikes) to retire the side in what was his first game action at any level since June 28. Cubs manager Craig Counsell hasn't provided word on the next steps for Roberts, but the right-hander may not need any further rehab appearances before returning from the 15-day injured list. MLB.com currently lists Roberts as its probable starter for Tuesday's game against the Tigers, though if he's activated for that contest, he would likely work just an inning or two before David Peterson takes over in bulk relief.

Roberts had been scheduled to throw off a mound a second time prior to the All-Star break, though it's unclear if that came to pass. The right-hander has been on the shelf since June 29 due to forearm inflammation and will eventually need to complete a rehab assignment before returning from the 15-day injured list.