“It felt great,” was the only thing the 23-year-old had to say to reporters before departing the stadium.
Commonwealth champion Akani Simbine from South Africa was the second fastest qualifier in 10.01 for the semis on Saturday (early Sunday AEST).
He was followed by defending world champion Justin Gatlin – who has served two doping bans – and 2011 world title holder Yohan Blake from Jamaica.
Gatlin said it felt “weird” competing at a global championships without retired Jamaican superstar Usain Bolt, although it gave new athletes the chance to make their mark.
“It’s not like I’m in lane five and I’ve got to worry about Usain in lane four,” Gatlin said.
“I’ve got to worry about all the other lanes around me. That’s the exciting part of track and field.”
Norwegian young gun Jakob Ingebrigtsen, who did the 1500m-5000m double at last year’s European championships, was disqualified in the opening round of the longer event on Friday for stepping outside his lane.
Norwegian officials were appealing the ruling.
Ingebrigtsen’s two older brothers, Filip and Henrik, both reached the final, as did Australian Stewart McSweyn.
Local hero Abderrahman Samba was quickest in the men’s 400m hurdles heats in 49.05, with Norwegian gold-medal favourite Karsten Warhlom easing into the semis in 49.27.
Warholm moved to second on the all-time list with a time of 46.92 in Zurich in August.
Juan Miguel Echevarria from Cuba dominated the qualifying round of the men’s long jump, with his first and only effort of 8.40m way ahead of 2016 Olympic champ Jeff Henderson from the United States (8.12m).