[1] He attended college at the University of Southern California, and was the Pacific-10 Conference champion in the men's 400m dash four consecutive years from 1996 through 1999.

[2] As a sophomore, Davis finished third at the 1997 NCAA men's Outdoor Track & Field Championships with a time of 45.36[3] In 1998, he won the NCAA Men's Outdoor Track & Field National Championship in the 400m event with a time of 45.18.

Despite improving his time in the NCAA championships the following year, Davis finished third again, being edged out by LSU's Derrick Brew by 2 one-hundredths of a second for second place.

He was on the gold medal-winning USA men's 400m World Championship relay team in 1999.

The victory was vacated in 2008 when a teammate confessed to using performance-enhancing drugs during that time.