"He's got to be able to run, to cut, to stop and start. He's doing more all the time. [Medical director] Stan [Conte] said he's 75 percent running. He's going in the right direction. I saw him jump rope today. He's doing more stuff. He's at the point with the ankle where it takes a while."
Mattingly added the medical department hasn't talked about a rehab assignment, "so that's still a ways away."
The Minor League season concludes on Sept. 2.
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.