Yohan Blake (born December 26, 1989) is a Jamaican sprinter and the current 100 metre World Champion. He holds the national junior record for the 100 metres, and is the youngest sprinter to have broken the 10-second barrier (at 19 years, 196 days). Blake's personal best of 9.82 seconds makes him the fourth fastest Jamaican runner, after Nesta Carter, Asafa Powell and Usain Bolt. His fastest run under any conditions is 9.80 seconds in May 2011 in Kingston, but the wind assistance (+2.2 m/s) was over the legal limit. He is coached by Glen Mills, and is training partners with Bolt and Daniel Bailey. On September 16, 2011 in Brussels, Belgium, he won in a time of 19.26 seconds, the second fastest 200 m ever.

Born in St. James, Jamaica, Blake is the son of Veda and Shirley Blake. He attended St. Jago High School in Spanish Town.

Blake set the fastest time by a Jamaican junior sprinter over 100 m with 10.11 seconds. The record was set at the 2007 CARIFTA Games held in the Turks and Caicos islands where he also led his team to gold in the 4 × 100 metres relay. At this occasion, he was awarded the Austin Sealy Trophy for the most outstanding athlete of the 2007 CARIFTA Games.

The Honourable Usain St. Leo Bolt, OJ, C.D. ( /ˈjuːseɪn/; born 21 August 1986), is a Jamaican sprinter and a five-time World and three-time Olympic gold medalist. He is the world record and Olympic record holder in the 100 metres, the 200 metres and (along with his teammates) the 4×100 metres relay. He is the reigning Olympic champion in these three events, and is one of only seven athletes (along with Valerie Adams, Veronica Campbell-Brown, Jacques Freitag, Yelena Isinbayeva, Jana Pittman, Dani Samuels) to win world championships at the youth, junior, and senior level of an athletic event.

Bolt won a 200 m gold medal at the 2002 World Junior Championships, making him the competition's youngest-ever gold medalist at the time (since surpassed by Jacko Gill). In 2004, at the CARIFTA Games, he became the first junior sprinter to run the 200 m in less than 20 seconds with a time of 19.93 s, breaking the previous world junior record held by Roy Martin by two-tenths of a second. He turned professional in 2004, and although he competed at the 2004 Summer Olympics, he missed most of the next two seasons due to injuries. In 2007, he broke Don Quarrie's 200 m Jamaican record with a run of 19.75 s.

Tyson Gay (born August 9, 1982) is an American track and field sprinter. His primary events are the 100 meters and 200 meters. His personal bests establish him as the second fastest athlete in the 100 meters and the fifth fastest athlete in the history of the 200 meters, with times of 9.69 (which is a United States record) and 19.58 seconds respectively.

Gay has won numerous medals in major international competitions, including a gold medal sweep of the 100 m, 200 m and 4 x 100 meters relay at the 2007 Osaka World Championships. This made Gay the second sprinter to win all three events at the same World Championships, after Maurice Greene.

At the same meet, Gay suffered a severe hamstring injury in the 200 m event. The injury persisted and this contributed to his failure to win a single medal at the Beijing Olympics. As a participant in the US Anti-Doping Agency's "Project Believe" program, Gay is regularly tested to ensure that his system is clean of performance-enhancing drugs.

Gay also holds the record for the fastest non-winning time for the 100 meters. In August 2009, he ran 9.71 seconds in the World Athletics Championships from Berlin, Germany. Tyson Gay remains the only sprinter to have defeated Usain Bolt in a final since Bolt made his first world record run. Gay ran a wind assisted 9.68 at the 2008 US Olympic trials.

Asafa Powell CD (born 23 November 1982) is a Jamaican sprinter who specialises in the 100 metres. He held the 100 m world record between June 2005 and May 2008, with times of 9.77 and 9.74 seconds respectively. Powell has consistently broken the 10-second barrier in competition, with his personal best of 9.72 s being the fourth fastest time in the history of the event. As of 2nd May 2012, Powell has broken the ten-second barrier legally more times than anyone else – 74 times in total.

Powell competed in the 100 m at the 2004 Athens Olympics and the 2008 Beijing Olympics but failed to convert his success to the world stage, finishing fifth both times. However, in Beijing with the Jamaican team he won a gold medal and set the world and Olympic record in the 4 × 100 metres relay. At the 2007 Osaka World Championships he won a bronze and a silver medal in the 100 m and 4 x 100 m relay respectively and he has been successful at the Commonwealth Games, winning two gold and one silver medal. At the 2009 World Championships he won 100 m bronze and a relay gold. Powell has won five times at the IAAF World Athletics Final and is the 100 m record holder for the event.