The Chicago Cubs have activated right-hander Ethan Roberts from the 15-day injured list after he missed time due to a cut on his right middle finger. In a contrasting development, manager Craig Counsell announced that reliever Hunter Harvey is experiencing a setback in his recovery from right triceps inflammation, which has kept him out for a month. An MRI revealed a stress reaction in Harvey's upper triceps and shoulder, leading to a mandated four-week shutdown. To accommodate Roberts' return, right-hander Gavin Hollowell was optioned to Triple-A Iowa. Meanwhile, left-handed reliever Caleb Thielbar, who has been out since April 24 with a left hamstring strain, successfully completed a bullpen session and is expected to throw another session soon. Counsell noted that Thielbar's next steps will involve live batting practice and a potential rehab stint.