Stadium announcer at World Track and Field Championships got to call his son's stunning upset win in the 1,500 meter

• Great Britain's Jake Wightman won the 1500m at World Championships in a stunning upset.
• His father, Geoff, is the stadium announcer at Hayward Field and said on the PA: "That's my son!"

A heartwarming moment unfolded at the World Athletics Championships on Tuesday, as stadium announcer Geoff Wightman got to call his son Jake's win in the men's 1500-meter race.

Wightman's victory was a major shock; it was the first gold of his career, and it came against three runners — Jakob Ingebrigtsen, Timothy Cheruiyot and Josh Kerr — who were defending their podium spots from the Olympics in Tokyo just a year ago.

On the final lap, Wightman, who had been running mid-pack, suddenly moved to the outside and passed Ingebrigtsen. With a final kick, Wightman moved into first place and never relented, taking home England's first 1500-meter world title since 1983.

On the stadium PA at Hayward Field in Oregon, Geoff Wightman was calling the race: "It's going to be close, but Jake Wightman wins gold!"

According to The Guardian's Sean Ingle, Geoff was then shown on the jumbotron, as he said, "That's my son. I coach him. And he's the world champion."

Former Olympian and track analyst Katharine Merry filmed Geoff's reaction, as well as his wife's, Susan, as they celebrated the win.

The family even got a group photo on the track together.

According to Ingle, Geoff has been Jake's coach for years, and though he had been preparing for the possibility he could announce his son winning, the actuality still hit him hard.

"It was surreal watching him win gold," Geoff said. "I was thinking: I know that guy. He has a familiar look."

Jake said his dad has been accused of being robotic on the mic, but he was hoping for more emotion this time, Ingle reported.

Geoff joked: "I have to be impartial; otherwise, long after he's gone, I'll not be allowed to commentate again on the 1500m."