Morgan said he is anxious about the future of athletics after Bolt retires following the London World Championships because the sport will lose its biggest draw. My execution was poor; my start was poor as always.
Usain Bolt has no regrets as he prepares to hang up his spikes in August and says he is looking forward to watching the 2020 Tokyo Olympics as a spectator.
Bolt thanked his fans, saying he never expected this much support from a sold-out crowd. "But I couldn't have done it without the support of my parents".
"I didn't expect anything spectacular".
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Bolt raced the 100m, and as he's done so many times in the past, he easily won, finishing in 10.03 seconds.
Bolt, 30, drew the curtain down on his Olympic career in August by sweeping the 100 metres and 200 metres sprint titles in the third successive Summer Games.
Although the London Olympic gold-medalist finished well past his record time it was enough to defeat his compatriot Javaughn Minzie convincingly.
De Grasse made history in Rio past year when he became the first Canadian sprinter to win three medals at a single Olympics - silver in the 200m, behind Bolt, and bronze from the 100m and 4x100m relay.
Yohan Blake heads the list of entrance in the open 100m with training partner and countryman Kemar Bailey-Cole also entered along with Akani Simbine of South Africa.
Bolt and Rudisha will share the spotlight with a decorated group of athletes including two other world record holders at the meet dubbed a "salute to the legend".
"Great personalities like Usain Bolt ... make people want to see what else Jamaica has to offer, so he literally opens doors for Jamaica to the rest of the world". "I just wanted to come out here and put on a show for the crowd".