"He's moving forward and feeling better about it," Mattingly said.
Mattingly, however, said there still is no timetable on Kershaw's return and the medical department is still calling the shots.
"Stan [Conte, athletic trainer] decides how far and how fast," Mattingly said. "It's not in Clayton's hands."
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.