Wicks (oblique) was transferred to the 60-day injured list Friday, Andy Martinez of Marquee Sports Network reports.
The left-hander landed on the shelf in mid-June with a Grade 2 right oblique strain, and he hasn't recovered as quickly as the Cubs had hoped. Wicks will be eligible to return in mid-August, but he may need to ramp up his throwing soon in order to have a chance of avoiding a longer absence.