The American predicted his coach would have a tough word for him after Norman fell asleep a bit on the curve and had to rally for the win in 45.00.
Coverage
Donavan Brazier discusses his American record and historic 800m victory at the World Championships. He also comments on his status within the Oregon Project and reaction to Salazar's ban.
Noah Lyles ran 19.83 to cap off the long season with 200m gold at the World Championships.
The 20-year-old made her World Championships debut in Tuesday 400mH prelim, winning her heat in 54.45.
Sam Kendricks successfully defended his world title with a clearance of 5.97m.
Mondo Duplantis took home pole vault silver after clearing 5.92m and 5.97m on his last attempt.
The reigning Worlds runner-up took second in the pole vault again in a deep competition.
A day after his gold medal run, Noah Lyles discusses his role as a showman, competing in Doha and Usain Bolt's Instagram post about him.
Grant Holloway followed up his NCAA 110m hurdles title with a win on the highest stage in Doha.
Stan And Tasha Holloway explain how they helped their son through his first summer as a professional.
400m world leader Michael Norman failed to advance after he finished 7th in the semi. Norman has been dealing with an undisclosed issue for months.
Sydney McLaughlin couldn't quite catch Dalilah Muhammad in the final 100m, but the 20-year-old was thrilled to become the second-fastest woman ever.
Joe Kovacs won the best shot put competition of all-time, winning 22.91m in his final round.
Nia Ali set personal bests on back-to-back rounds to get her first outdoor title.
The 100m hurdles world champion addressed the media after her first outdoor global title on Sunday in Doha.
Greater Latrobe graduate Hanna Green has continued to rise the ranks, and has become one of the nation's top half milers.
Oscar Smith alum, Michael Cherry anchored Team USA Sunday to a world record and world championship gold medal in the mixed 4x4.
T.C. Williams alum and adidas athlete Noah Lyles wins the 200m dash in Doha to claim the world title.
World champ Noah Lyles discusses his role as a showman, and Usain Bolt's Instagram post about him.
The reigning Worlds runner-up took second in the pole vault again in a deep competition.
Grassfield and Florida alumni Grant Holloway wins the IAAF 110m Hurdle world title with his 13.10 clocking.