Wightman was already the fastest man of the year and won the 200m.
Ingebrigtsen couldn’t respond and the Nottingham-born athlete took the biggest win of his career.
Father and coach Jeff is the stadium announcer at Hayward Field and commented on his son’s gold medal win.
He said, “Running comes home. Fabulous. He’s my son, I’m training him and he’s a world champion.
Whiteman had previously won bronze in Europe and the Commonwealth of Nations, and only placed 10th at the Tokyo Olympics last year.
After his win, Whiteman said he was still trying to figure out the feat.
“It probably won’t sink in until I retire, I don’t think,” he said.
“It’s crazy. I had a disappointing year in Tokyo last year. I don’t think people realize how hard it was to go with such high expectations and go out hoping to win a medal but to finish in 10th place.
“I just knew that coming here I had to release the pressure and the only thing that could happen was that it was better than last year.
“I got out of there on the last lap. I knew if I was there 200m away I could put myself in a position to win and I was running for my life on that home.
“I’ve given up so much to get to this point and it’s totally worth it.”
a comrade Josh Kerr He tried to set the tone ahead of the final with his semi-final win, admitting he didn’t need to but it was “fun”.
But the 24-year-old was unable to threaten the medal spots and lost the ability to add last year’s Olympic bronze to finish fifth.