James Pigue, 53, of Templewood Drive, was fatally stabbed  outside Double E Bar & Grill at 4957 Lebanon Pike Sunday night, Metro Police said.
The suspect in the case, Leo Knowles, 30, of Goodlettsville, is cooperating with Hermitage Precinct detectives in the investigation, police said.
Pigue and Knowles allegedly got into a verbal argument inside the bar at 10 p.m. Knowles and a friend were asked to leave. After Knowles went outside, Pigue and a friend also exited the business concerned that Knowles might damage their motorcycles.
Pigue and Knowles subsequently got into a physical fight during which Pigue was stabbed. Pigue was transported to Summit Medical Center where he died.
No charges have been placed at present, police said.