Kristaps Porzingis posted two pictures of himself sprinting on an outdoor track in response to comments from David Fizdale that he's only doing some light running.

Fizdale said Porzingis was "working his butt off" but hadn't progressed significantly from the activity he was engaged in before training camp, which included light running and shooting.

"He's still kind of there, [no] huge jumps," Fizdale said.

Porzingis underwent surgery to repair an ACL tear in his left knee in mid-February.

The Knicks don't yet have a timetable for Porzingis to return.