"By April, I should be running on solid ground," Morrison said.
On Monday, Morrison did some hitting off the tee.
The Marlins and Morrison aren't rushing anything as he recovers from his second surgery on the same knee.
Morrison continues to run on an anti-gravity treadmill.
The Marlins will open the season with Morrison on the disabled list. But he is hopeful to begin playing in Minor League games in the middle of April.
If he is seeing game action by then, a best-case return date to the Marlins would be around May 1.
Casey Kotchman, a non-roster invitee, has had a strong Spring Training, and he is expected to be the Opening Day first baseman.
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter