STOUT: Welcome back. Parts of Asia are suffering from a heat wave.</s>STOUT: Now the fastest man in history is one championship away from retirement. Usain Bolt will run his last race representing Jamaica on Saturday in the 4x100 meter relay at the World Athletics Championships. The eight-time Olympic champion will be looking for a bit of revenge against American Justin Gatlin, who beat him in the 100-meter final last week. Now 30 years old, Bolt has certainly left his mark on the sport. He will be retiring as the world record holder in both the 100-meter and 200-meter races. And that is our show. And please, you can join me on "NEWS STREAM" all next week, when I will be in Seoul, South Korea, for a look at how the region is coping with the growing tensions between the U.S. and North Korea. Thank you for watching. I'll be back with the headlines in just a moment.
Usain Bolt to Run Final Race.