Olympic champion Usain Bolt won the 100 metres at a Paris Golden League meeting late on Friday in 9.79 seconds, recording his best time of the season despite a poor start in damp, chilly conditions.
His time was only marginally slower than the 9.77 seconds ran by US rival Tyson Gay in Rome last week - the fastest mark of the year so far.
Bolt, who holds the 100 record with 9.69 seconds set at the Beijing Olympic Games last year, was slow out of the blocks but pulled clear of the field after the first 50 metres.
"It was not the perfect race, but it was good enough for me. I had a bad start in bad weather so it's a good result," he said afterwards, adding that he had played it safe.
"I was careful because I didn't want to be injured. You don't want to jet injured at this time in the season just before the World Championships so you just have to be cautious."
He chalked up his previous best of the year of 9.86 seconds in June and Bolt said he would only take part in one more meeting, in London this week, before the Berlin World Championships in August.
"The championships are very important to show the world that last year was not a joke," said Bolt, who also set world records in winning the 200 metres and 4x100 metres relay at the 2008 Olympic Games.
Bolt is the favourite to steal Gay's 100 and 200 metre crowns in Berlin and he did not face any of his main rivals in Paris. Daniel Bailey, of Antigua, came second on Friday in 9.91 seconds and Jamaican Yohan Blake third in 9.93.
Bolt said he was looking forward to a showdown with Gay.
"It's going to be wonderful and it's going to be an exciting time," he said.
The unseasonal cold cast a pall over all the events at the Paris meeting with few athletes able to shine in the gloom.
However, it was a good evening for the quartet of athletes still in the running for a cut of the lucrative $1 million jackpot that will be shared out between those who win at all six Golden League meetings later on this year.
Olympic 5,000 metre and 10,000 metre champion Kenenisa Bekele, of Ethiopia, completed his fourth consecutive victory in the galas, winning the 3,000 metres in 7 minutes, 28.64 seconds.
US world 1,500 metre and 5,000 metre champion Bernard Lagat came second in 7:33.15.
The other three contenders for the $1 million jackpot - Jamaica's Kerron Stewart (100m), American Sanya Richards (400m) and Russia's Yelena Isinbayeva (pole vault) - all maintained their 100 per cent records with relative ease.