
Aug 21 - By Associated Press
Usain Bolt won his third gold medal of the world championships Saturday when Jamaica won the men's 400-meter relay but the team failed to set a world record.
Aug 18 - By Associated Press
Kerron Clement of the United States has defended his 400-meter hurdles title at the world championships.

Aug 18 - By Associated Press
Sanya Richards has won the 400 meters at the world championships Tuesday, defeating Shericka Williams of Jamaica.

Mar 16 - By Associated Press
Jo Jackson has set a world record in the 400-meter freestyle at the British swimming championships.
Aug 22 - By Associated Press
Usain Bolt helped Jamaica win the 400-meter relay final in 37.10 seconds Friday night for his third gold medal and third world record of the Olympics.
Aug 21 - By Associated Press
LaShawn Merritt has upset defending champion Jeremy Wariner to lead a U.S. sweep of the medals in the 400 meters at the Olympics.
Aug 19 - By Associated Press
Christine Ohuruogu of Britain has won the gold medal in the women's 400 meters at the Beijing Olympics.
Aug 18 - By Associated Press
American Angelo Taylor has won the men's Olympic 400-meter hurdles, finishing in 47.25 seconds to lead a U.S. sweep in the event.

Aug 16 - By Associated Press
Michael Phelps won his record eighth gold medal Sunday at the Beijing Olympics as a member of the victorious U.S. 400-meter medley relay team, breaking a tie with Mark Spitz for most golds in a single games.

Aug 16 - By Associated Press
Australia has defeated the United States to win the women's Olympic 400-meter medley relay in a world-record time.
Aug 10 - By Associated Press
Jason Lezak outtouched Alain Bernard of France at the wall Monday to give the United States a victory in the 400-meter freestyle relay and keep alive Michael Phelps' bid for eight Olympic gold medals.
Aug 10 - By Associated Press
Katie Hoff of the United States has been upset in the 400-meter freestyle, losing the Olympic gold medal to Rebecca Adlington of Britain.
Aug 9 - By Associated Press
The United States has set a world record in the men's Olympic 400-meter freestyle relay preliminaries.
Jun 30 - By Associated Press
Katie Hoff is 2-for-2 at the U.S. Olympic trials, locking up another race for Beijing with a 400-meter freestyle victory.
Jun 29 - By Associated Press
Larsen Jensen has set an American record to win the 400-meter freestyle at the U.S. Olympic swimming trials, winning in 3 minutes, 43.53 seconds.
Jun 29 - By Associated Press
Michael Phelps has set a world record in his first event of the U.S. Olympic swimming trials, holding off rival Ryan Lochte to win the 400-meter individual medley with a time of 4 minutes, 5.25 seconds.
Apr 13 - By Associated Press
Russia has set a 400-meter individual medley relay world record at the short-course swimming world championships.
Apr 12 - By Associated Press
Marleen Veldhuis of the Netherlands has improved her own world record in the women's 50-meter freestyle at the short-course swimming world championships.
Apr 11 - By Associated Press
The United States has set a world record in the women's 400-meter medley relay at the short-course swimming world championships.

Apr 9 - By Associated Press
Kirsty Coventry of Zimbabwe has set a world record in the 400-meter individual medley at the short-course swimming world championships.

Mar 22 - By Associated Press
Australian Stephanie Rice broke the world record in the 400-meter individual medley on the first night of the Australian swimming championships on Saturday.
Mar 18 - By Associated Press
The Netherlands set a world record in the women's 400-meter freestyle relay at the European swimming championships Tuesday with a time of 3 minutes, 33.62 seconds.

Mar 18 - By Associated Press
The Netherlands has set a world record in the women's 400-meter freestyle relay at the European swimming championships with a time of 3 minutes, 33.62 seconds.

Sep 21 - By Vinnee Tong, AP Business Writer
For the first time, Forbes magazine's list of the 400 richest Americans consists exclusively of people worth $1 billion or more. As a group, the people who made the rankings released Thursday are worth a record $1.25 trillion, compared with $1.13 trillion last year.

Mar 21 - By Associated Press
Australia broke its own world record in the women's 400-meter medley relay at the Commonwealth Games, finishing in 3 minutes, 56.30 seconds Tuesday.