| Venue: Hayward Field, Eugene, Oregon Dates: 15-24 July |
| Coverage: Watch live on BBC TV, BBC iPlayer, BBC Sport website and mobile app (UK only) |
The 400m bronze medal was won by Matt Hudson- Smith.
The British man went hard over the first 300m and then held off Allison and Wayde to take the final podium spot.
Michael Norman of the USA won the gold medal in 44.29 seconds.
Hudson- Smith said that this was just the beginning.
I don't think I've made any changes to the surface. There is a monkey on my back. I pushed on from here.
The American crowd cheered for McLaughlin to win the 400m hurdles in a world record time.
Hudson-Smith broke the British record with a 44.35-second run on the same track in May.
The Englishman is adamant that he needs medals at this point in his career.
Hudson-Smith contemplated quitting the sport a year after finishing eighth in the Rio 2016 final.
He went to the United States to train after his mother convinced him to.
He missed last year's Olympics with the latest in a string of medical problems, but is back to his best this season.
After finishing second in the final, he added another medal to his European gold.
He said it was mad. People don't know the whole thing. There have been a lot of mental health issues in the last three years.
At the end, I was just hanging on.
Hudson-Smith will return home to compete at the Commonwealth Games in Birmingham where, with James opting to miss the Games, he will be favourite in front of a home crowd.
Hudson-Smith's medal is the fourth of the Championships for Great Britain, following Jake Wightman's 1500m gold and bronze in the 1500m and Dina Asher-Smith's 200m bronze in the 200m.
In the women's race, Miller-Uibo strode away with 400m gold, her first world title after five previous appearances.
The Dominican Republic's Marileidy Paulino was clear of the rest of the field after the final bend.
Miller-Uibo won in a world leading 49.11 seconds, half a second ahead of Paulino and Sara Williams took the bronze.
In the 800m semi-finals, Great Britain's Olympic silver medal winner, Keely Hodgkinson, put in a composed performance to win in 1:58.51.
Athing Mu was the fastest into the final, easing up to win in 1:58.12
After finishing fifth in a heat won by Mary Moraa, Jemma Reekie was knocked out of the World Championships in the semi-finals.
Hodgkinson, Mu and Moraa will compete in the gold medal match on Monday.
"Athing is going to be a good competitor, I think she is going to be strong."
I don't believe that the gold medal is already on someone's neck. Five people are competing for a medal. It is going to be rough.
Great Britain won their heat in 41.99 to advance to the final where they will face Jamaica.
Both teams will be strengthened for the final. Asher-Smith will join the British quartet, while Fraser-Pryce, Jackson, and Thompson-Herah are likely to join the Jamaicans.
The United States had two sprinters in their team, and they were the first to qualify.
The Great Britain's men's team qualified for the final but are up against an impressive US team.
Great Britain was seventh fastest in 38.49.
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