quality:corruption, linguistic:voice_change
Rise to prominence

The 2002 World Junior Championships were held in front of a home crowd in Kingston, Jamaica, and Bolt was given a chance to prove his credentials on a world stage. By the age of 15, he had grown to 1.95 metres (6 ft 5 in) tall, and he physically stood out among his peers. He won the 200 m in a time of 20.61 s, which was 0.03 s slower than his personal best of 20.58 s, which he set in the 1st round. Bolt's 200 m win made him the youngest world-junior gold medallist ever. The expectation from the home crowd had made him so nervous that he had put his shoes on the wrong feet, although he realized the mistake before the race began. However, it turned out to be a revelatory experience for Bolt, as he vowed never again to let himself be affected by pre-race nerves. As a member of the Jamaican sprint relay team, he also took two silver medals and set national junior records in the 4×100 metres and 4×400 metres relay, running times of 39.15 s and 3:04.06 minutes respectively.

The rush of medals continued as he won four golds at the 2003 CARIFTA Games and was awarded the Austin Sealy Trophy for the most outstanding athlete of the games. He won another gold at the 2003 World Youth Championships. He set a new championship record in the 200 m with a time of 20.40 s, despite a 1.1 m/s (4.0 km/h; 2.5 mph) head wind. Michael Johnson, the 200 m world-record holder, took note of Bolt's potential but worried that the young sprinter might be over-pressured, stating, "It's all about what he does three, four, five years down the line". Bolt had also impressed the athletics hierarchy, and he received the IAAF Rising Star Award for 2002.

Bolt competed in his final Jamaican High School Championships in 2003. He broke the 200 m and 400 m records with times of 20.25 s and 45.35 s, respectively. Bolt's runs were a significant improvement upon the previous records, beating the 200 m best by more than half a second and the 400 m record by almost a second. Bolt improved upon the 200 m time three months later, setting the former World youth best at the 2003 Pan American Junior Championships. The 400 m time remains No. 6 on the all-time youth list, surpassed only once since, by future Olympic champion Kirani James.

Bolt turned his main focus to the 200 m and equalled Roy Martin 's world junior record of 20.13 s at the Pan-American Junior Championships. This performance attracted interest from the press, and his times in the 200 m and 400 m led to him being touted as a possible successor to Johnson. Indeed, at sixteen years old, Bolt had reached times that Johnson did not register until he was twenty, and Bolt's 200 m time was superior to Maurice Greene 's season's best that year.

Bolt was growing more popular in his homeland. Howard Hamilton, who was given the task of Public Defender by the government, urged the JAAA to nurture him and prevent burnout, calling Bolt "the most phenomenal sprinter ever produced by this island". His popularity and the attractions of the capital city were beginning to be a burden to the young sprinter. Bolt was increasingly unfocused on his athletic career and preferred to eat fast food, play basketball, and party in Kingston's club scene. In the absence of a disciplined lifestyle, he became ever-more reliant on his natural ability to beat his competitors on the track.

As the reigning 200 m champion at both the World Youth and World Junior championships, Bolt hoped to take a clean sweep of the world 200 m championships in the Senior World Championships in Paris. He beat all comers at the 200 m in the World Championship trials. Bolt was pragmatic about his chances and noted that, even if he did not make the final, he would consider setting a personal best a success. However, he suffered a bout of conjunctivitis before the event, and it ruined his training schedule. Realising that he would not be in peak condition, the JAAA refused to let him participate in the finals, on the grounds that he was too young and inexperienced. Bolt was dismayed at missing out on the opportunity, but focused on getting himself in shape to gain a place on the Jamaican Olympic team instead. Even though he missed the World Championships, Bolt was awarded the IAAF Rising Star Award for the 2003 season on the strength of his junior record-equalling run.