Dan Jennings (concussion) began a rehab assignment with the Gulf Coast League Marlins on Tuesday.
Dan Jennings (concussion) said Thursday that he's not experiencing any concussion symptoms.
Marlins placed LHP Dan Jennings on the 7-day concussion disabled list.
A CT scan on Dan Jennings' head came back negative.
Dan Jennings (head) has been taken to a Pittsburgh hospital to be evaluated further.
Dan Jennings left Thursday's game against the Pirates after a Jordy Mercer line drive caught him in the head.
Marlins recalled LHP Dan Jennings from Triple-A New Orleans.
Marlins optioned LHP Dan Jennings to Triple-A New Orleans.