Career
He is known for being the National High School record holder in the race. Running for Bell Gardens High School set the record of 1:46.45 in the trial round of the 1996 CIF California State Meet at Cerritos College in Norwalk, California. Granville also holds the indoor 800 metres record and set the class record at 800 metres at all four levels of high school.
1:51.03 as a freshman, 1:48.98 as a sophomore and 1:47.96 as a junior.
He is reputed to have run the race around 1:56 in 8th grade. Granville was trained by his father, on grass at nearby Bell Gardens Middle School, separate from the rest of his team
His father felt training on grass "makes you work harder."
The 1:46.45 qualified Granville to run in the United States Olympic Trials, skipping his high school graduation, a few weeks later where he advanced to the quarter finals behind the previous High School record holder George Kersh. After high school, Granville went to University of California, Los Angeles where his times did not improve.