Usain Bolt and Yohan Blake continued to dominate the Diamond League circuit, while again avoiding each other, with the Jamaican duo winning the 200 and 100 meters respectively in Zurich, the penultimate event of this year's circuit.
Running in pretty cold weather, Bolt, participating in only the 200 for the second-straight time, won the race in 19.66 seconds, with it beating the meet record of 19.79 set by American Wallace Spearmon a couple of years ago.
Fellow Jamaicans Nickel Ashmeade (19.85), Jason Young (20.08) and Warren Weir completed the 1-4 sweep.
"Running after the Olympics is much more fun, it is less stress," Bolt said after the race. "I am just enjoying it, the fans make me enjoy it.
"Now I have one more race (in Brussels) until the end of the season and I am looking forward to it.
"Running under 20 seconds is good. I am happy to run sub-20, but I did not want to push my body -- it's the end of the season and I have to be careful.
Talking about the race, Bolt said setting the right pace, before kicking on in the final straight, was crucial to his win in a cold and blustery evening. "I paced myself on the curve but I did not want to put myself under too much pressure because that causes problems," he said.
"During the season, you push yourself a lot and it's only at the end that you realise how tired you are."
In the 100 meters, Blake picked up from where he left off in the previous Diamond League meeting, winning in 9.76 seconds, with compatriot Nesta Carter a distant second in 9.95. American Ryan Bailey took third in 10.97. Tyson Gay could not trouble Blake, after he was disqualified for a false start.
In the women's 100, Olympic champions Shelly-Ann Fraser-Pryce took gold in 10.83, holding off the challenge of Americans Carmelita Jeter and Allyson Felix, who finished second and third respectively.
There was an upset in the men's 800 meters, when Olympic champion and world record holder David Rudisha was beaten by Mohammed Aman. The Ethiopian winner timed 1:42.53, a national record, in the win. Rudisha took second in 1:42.81.
"The race was fast," Rudisha said. "My legs felt tired and I cannot run good if the weather is not good. I hoped for a faster race and I am a little bit disappointed."