Post your greatest celebrity "coulda been great" running stories. I gotta go with Eminem: dude could have gotten to low 1:50s and as far as I can tell he never took a serious crack at 400m. I'm guessing he could have been a 46.xx guy with proper training and dedication.
Greater Detroit Regional
May 22, 1990
Event #31 Boys 800m Run
Heat 3
1. Saunders, Jeremy (Grosse Point South) 1:52.31
2. Jackson, Curtis (Cass Tech) 1:53.87
3. Buchanan, Keith (Kings) 1:54.75
4. Mathers, Marhshall (Lincoln) 1:54.76
5. Williams, Jamaal (Northwestern High) 1:57.89
6. Njapa, Charles (Western International) 2:01.01
7. Martin, Kelvin (Dearborn) 2:05.76
8. Douthit, Pat (Detroit Jesuit) DNF