Elaine Thompson-Herah’s quest to topple Florence Griffith Joyner’s 100 metres world record takes her to Lausanne on Thursday, and the Jamaican feels if conditions are right she can best the 33-year-old mark.
A series of top-class runners have failed to bridge the gap to the time of 10.49 seconds set by the American in 1988.
Olympic champion Thompson-Herah went as close as anyone when running a stunning 10.54 in winning in Eugene at the weekend.
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Her effort in Oregon has given weight to those who feel Thompson-Herah can reach a mark many thought was untouchable, but conditions would need to be perfect - according to the Jamaican.
“It is in my reach. On a perfect day, and perfect weather if I get that, I would definitely challenge it,” Thompson-Herah said.

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It is being claimed that the record will not be broken in Switzerland on Thursday, as the weather is set to be cooler than ideal for sprinting.
Thompson-Herah is not concerned about the weather, and is prepared to bide her time for the ideal conditions - which could be back at Eugene at the World Championships next year.

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"I tell myself, [the temperature] doesn’t matter,” she said. “Going to Prefontaine there was no intention of breaking that world record. It was a normal work day for me.
"If it doesn’t happen this season, I’m fine with the time that I have got right now.”
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