Bracy attended William R. Boone High School in Orlando, Florida, where he also played American football at the wide receiver position. In August 2010, the Orlando Sentinel ranked him as the No. 6 prospect from Central Florida in the class of 2012. By October 2010 he had received at least six scholarship offers, including from Florida State University and the University of Miami. In July 2011, Bracy committed to Florida State University for football and track.
Bracy participated in the 2012 Under Armour All-America Game. He made ESPN SportsCenter’s top 10 plays of the night with an acrobatic one-handed, 32-yard touchdown reception in the first quarter.
At the Florida High School Class 4A track and field meet in May 2010, Bracy swept the 100 meter and 200 meter dash. He won the 100 meter in a wind assisted 10.19 seconds, the fastest time in state meet history. His fastest legal time of the season, 10.42, tied Damiere Byrd and Odean Skeen for third place among youth sprinters in 2010, behind David Bolarinwa and Miles Shuler.
Easily the youngest in a race dominated by college runners, Bracy finished sixth in the 100-meter dash at the USA Track & Field Junior National Championships in Des Moines, Iowa. In July, at the 2010 World Junior Championships in Athletics in Moncton, Canada, Bracy ran a relay leg for the U.S. squad in the 4×100 metres relay heat.
He was an All-USA high school track and field team selection by USA Today in 2010, and 2011.
On March 26, 2011, Bracy won the men's open 100-meter dash title at FSU Relays in Tallahassee. He clocked a 10.28-second time, a new career best. Bracy also tied for No. 4 on the Florida all-time list with 2008 Olympic bronze medalist Walter Dix, who clocked a 10.28 time as a Coral Springs High School senior in 2004.
In June 2011 Bracy ran away with the 100-meter dash title at the 2011 USA Track and Field Junior Championships in Eugene, Oregon, clocking the second-fastest time in Florida high school history, in a wind assisted 10.05 seconds. Only Jeff Demps.
Starting of the 2012 track season, Bracy ran a world leading 6.08 seconds in the 55 meters at the Jimmy Carnes Youth Invitational track and field meet in Gainesville. He competed in the 2012 United States Olympic Trials.
On February 8, 2014, he won the 60 meters at the New Balance Indoor Grand Prix. Bracy, along with sprinter Trell Kimmons, will represent the United States at the 2014 IAAF World Indoor Championships from Sopot, Poland.
On March 8, 2014, he placed 2nd in the 60m in the IAAF Indoor World Championships in Sopot, Poland.
On August 10, 2014, Bracy was runner-up in the 100 meters to Asafa Powell who ran 10.02 to Bracy's 10.14 in Brazil.
On March 12, 2016, Bracy won 60 meters in 6.502 seconds at 2016 USA Indoor Track and Field Championships.
On March 18, 2016, Bracy was a finalist placing 7th in 60 meters at 2016 IAAF World Indoor Championships.
In the 2016 U.S. Olympic Team Trials in Eugene, Oregon, Bracy finished 3rd in a time of 9.98 seconds, earning a spot on the U.S. team for the Olympics.
On August 7, 2017, Bracy signed with the Indianapolis Colts as a wide receiver, having not played organized American football since he was a redshirt freshman at Florida State in 2012. He was waived on September 2, 2017.