A salesman for "The Contributor" newspaper was walking to his sales location when a motorist struck him in Antioch Thursday morning.
The accident occurred around 7:30 a.m. in the 3100 block of Murfreesboro Pike.
A preliminary investigation indicates the driver left the scene, but later returned.
The victim was transported to Vanderbilt University Medical Center in critical but stable condition.
Police reported that the driver, a 21 year old, was driving on a learner's permit.
Charges are pending.
No further information was released.
One outbound lane of Murfreesboro Pike was closed while authorities investigated. It has since reopened.