By CGTN's Zhu Mandan

China's Su Bingtian was competing in heat four of the 100m in the 2017 IAAF World Championships in London. 

Despite having a false start in his race, Su was able to win this heat in a season-best time of 10.03 seconds to reach the semi-finals.

"Generally speaking, my performance was not bad but I still think I didn't race the same way that I have in training. I felt my timing was off in the competition. I hope in the semi-finals, I can be more focused on the race, as I felt I didn't give my best effort tonight," Su told media after the match.

China's Su Bingtian, New Zealand's Joseph Millar and Japan's Aska Cambridge compete in the heats of the men's 100m athletics event at the 2017 IAAF World Championships at the London Stadium in London on August 4, 2017. /AFP Photo

In men’s 100-meter sprint, all eyes are on Usain Bolt who was also able to advance to the semi-finals. The Jamaican, dubbed as the world's fastest man, is ending his career after this meet. 

The Jamaican is his usual jovial self before the race. Bolt has won the 100m at every Worlds since 2009 except on 2011 in Daegu, South Korea, when he was disqualified for a false start. Bolt has a poor start but then turned on the jets, and was able to power home to victory clocking a time of 10.07 seconds, well below his best in the stadium of 9.63 when he ran at the 2012 Olympics. 

Usain Bolt of Jamaica looks left amid race to competitors during Heat 6 of Round 1 of the Men's 100 meters during day one of the 17th IAAF World Athletics Championships London 2017 at The London Stadium on August 4, 2017 in London, United Kingdom. /VCG Photo

"Overall, the start was poor as always but I have to really get it together because the shape I am in I have to really get going. So I can win if I want to stay focused and hopefully everything comes together tomorrow. For me right now, I am just happy. As I said, the crowd is giving me a lot of vibes. I got goosebumps as always when I come out. I really appreciate the way they show me love. I'm just really happy for this moment. We'll see how tomorrow goes," said Bolt after the match.