American champion Tyson Gay continued his impressive build-up to next month's world championships on Thursday by winning the 100 metres at Lausanne's Athletissima Diamond League meeting in 9.79 seconds.
Jamaica's former world record holder Asafa Powell was among the athletes left trailing while 2003 world champion Kim Collins of St Kitts and Nevis ran a personal best of 9.97 seconds at the age of 37 to finish fourth.
Free from the injuries which have hampered him since he won the 100 and 200 metres world titles in 2007, Gay has already produced season's best times in both events.
Gay, who raced in the US trials less than two weeks ago, got off to a good start before charging down the final 70 metres to destroy the field. Olympic champion Felix Sanchez was second in the 400 metres hurdles where he was beaten by Puerto Rico's Javier Culson, the bronze medallist in London, who produced a personal season's best of 48.14 seconds. Ukrainian Mariya Reymyen produced an upset when she beat Kimberly Duncan and Carmelita Jeter to win the women's 200 metres in 22.61 seconds.
Her compatriot Bohdan Bondarenko leapt 2.41 metres to win the men's high jump and was close to clearing a world record 2.46.
Results (Men): 100M: Tyson Gay (US, 9.79 seconds) 1; Asafa Powell (Jamaica, 9.88) 2; Michael Rodgers (US, 9.96) 3. 200M: Churandy Martina (Netherlands, 20.01s) 1; Jason Young (Jamaica, 20.20) 2; Jaysuma Saidy Ndure (Norway, 20.40) 3. 800M: Mohammed Aman (Ethiopia, 1:43.33) 1; Pierre-Ambroise Bosse (France, 1:44.11) 2; Marcin Lewandowski (Poland, 1:44.31) 3. 5000M: Yenew Alamirew (Ethiopia, 13:06.69) 1; Hagos Gebrhiwet (Ethiopia, 13:07.11) 2; Muktar Edris Awel (Ethiopia, 13:08.23) 3.110M hurdles: David Oliver (US, 13.03s) 1; Jason Richardson (US, 13.20) 2; Ryan Wilson (US, 13.27) 3. 400M hurdles: Javier Culson (Puerto Rico, 48.14) 1; Felix Sanchez (Dominican Republic, 48.58) 2; Mamadou Kasse Hanne (Senegal, 48.72) 3. High Jump: Bohdan Bondarenko (Ukraine, 2.41M) 1; Erik Kynard (US, 2.37) 2; Dusty Jonas (US, 2.30) 3.Pole Vault: Konstadinos Filippidis (Greece, 5.72M) 1; Augusto Oliveira (Brazil, 5.62) 2; Raphael Holzdeppe (Germany, 5.62) 3. Triple Jump: Pedro Pichardo (Cuba, 17.58M) 1; Teddy Tamgho (France, 17.40) 2; Christian Taylor (US, 17.13) 3. Shot Put: Ryan Whiting (US, 21.88M) 1; Reese Hoffa (US, 21.58) 2; Dylan Armstrong (Canada, 20.75) 3. Javelin Throw: Kim Amb (Sweden, 82.65M) 1; Andreas Thorkildsen (Norway, 81.54) 2; Stuart Farquhar (New Zealand, 80.42) 3.
Women: 200M: Mariya Ryemyen (Ukraine, 22.61M) 1; LaShauntea Moore (US, 22.67) 2; Kimberlyn Duncan (US, 22.73) 3. 400M: Francena McCorory (US, 50.36s) 1; Amantle Montsho (Botswana, 50.37) 2; Novlene Williams-Mills (Jamaica, 50.87) 3. 100M Hurdles: Dawn Harper-Nelson (US, 12.53) 1; Kellie Wells (US, 12.58) 2; Lolo Jones (US, 12.60) 3.3000M Steeplechase: Hiwot Ayalew (Ethiopia, 9:17.66) 1; Sofia Assefa (Ethiopia, 9:17.69) 2; Etenesh Diro Neda (Ethiopia, 9:24.40) 3. 4 x 100M relay: Switzerland (M Kambundji/ F Humair/ E Sprunger/ L Sprunger, 43.48) 1; Netherlands ( N van Leuveren/ D Schippers/ T van Schagen/ M Ghafoor, 43.84) 2; International Team (K Wells/ G Faye/ O Povh/ H Stuy, 44.22) 3. Long Jump: Blessing Okagbare (Nigeria, 6.98M) 1; Brittney Reese (US, 6.96) 2; Shara Proctor (Britain, 6.92) 3. Discus Throw: Sandra Perkovic (Croatia, 68.96M) 1; Yarelys Barrios (Cuba, 67.36) 2; Zinaida Sendriute (Lithuania, 63.82) 3.