Pierre-Ambroise Bosse of France tasted his first world title in men's 800m at IAAF World Championships here.
"Am I dreaming? I still can't believe it," a surprised Bosse said after the victory on Tuesday night, reports Xinhua news agency.
The Frenchman made his personal breakthrough with 1 minute and 44.67 seconds, also his best of the season.
The silver and bronze medals went to Adam Kszczot of Poland and Kipyegon Bett of Kenya respectively.
"After the semi-finals I was sure I could fight for the gold medal. I made a small tactical mistake coming home straight. I could have started to speed up a bit sooner," a disappointed Kszczot said.
"It was a tough race. I tried to push it in the last lap but you need to stay strong until the very end," Bett said.
