ATHLETICS WORLD CHAMPIONSHIPS
Venue: Olympic Stadium, Berlin Date: 15-23 August
Coverage: Watch the action live and highlights on BBC Two, BBC HD, Red Button, Radio 5 live and the BBC Sport website (video for UK users only)
Full BBC coverage details
Replay - Merritt wins 400m gold
Olympic champion LaShawn Merritt took 400m gold at the World Championships as he again proved too strong for Jeremy Wariner on a wet night in Berlin.
The American finished in 44.06 seconds, ahead of compatriot and Olympic silver medallist Wariner (44.60 sec) and Trinidadian Renny Quow (45.02 sec).
Britain's Michael Bingham finished outside the medals in 45.56 sec.
Two-time defending champion Allyson Felix of the USA cruised to take the women's 200m title, clocking 22.02.
Jamaica's Veronica Campbell-Brown, the two-time Olympic champion, and Debbie Ferguson-McKenzie of the Bahamas took silver and bronze.
"I knew I was strong and just powered away," said Felix. "It's really special to win a third world title. I wanted to do it in this stadium, represent my country and make Jesse Owens proud."
I feel kind of disappointed because I wanted to defend my title
Merritt left two-time defending champion Wariner trailing in the home straight as he powered to the 400m title.
"It was all about putting it from my head to the track," said Merritt. "I had already won the race in my heart.
"I ran this race a million times in my head. At 300m I felt good and at 350m I knew I had won the race, so I just needed to bring it home."
Wariner admitted: "I felt good coming up for the first part of the race. I think I was in a good position coming up for the turn, exactly where I wanted to be.
"I had to kick for it but unfortunately it was a slow finish. I feel kind of disappointed because I wanted to defend my title."
Replay - Felix wins third world 200m title
The finals were delayed by 40 minutes after a torrential downpour in the German capital.
There was drama in the men's 4x100m heats as the USA set the fastest time of 37.97 but were then disqualified for running out of their lane. The USA appealed but it was turned down.
Great Britain made it through after finishing second behind the USA, while the Jamaica team rested their biggest stars Usain Bolt and Asafa Powell as they reached the final in 38.60.
Yaroslav Rybakov of Russia won the men's high jump, after three times taking silver at the World Championships.
His best jump of 2.32m edged out Kyriakos Ioannou of Cyprus on the countback system, with Raul Spank of Germany and Sylwester Bednarek of Poland sharing bronze.
There was another gold for Russia when Sergey Kirdyapkin used a late surge to win the 50km walk.
Dani Samuels, 21, of Australia won the women's discus with a late throw of 65.44m, ahead of Cuba's Yarelis Barrios and Nicoleta Grasu of Romania.
Newly crowned world 1500m champion Yusuf Saad Kamel of Bahrain moved closer to repeating his father Billy Konchellah's feat of winning the world 800m crown when he qualified for the final with a battling display.
The Kenyan-born runner burst ahead of Russia's former Olympic champion Yuriy Borzakovsky at the line in 1min 45.01sec.
Absel Kiprop led through the bell but was knocked back into seventh spot and defending champion and Olympic bronze medallist Alfred Yego edged out.