The IAAF has sent a letter to the entrants in the women’s marathon at the IAAF World Athletics Championships Doha 2019 confirming that the race will go ahead as planned.
The latest weather information confirmed that the Wet Bulb Globe Temperature* for the race will be at or below 30 degrees.
Meanwhile American Coleman, silver medallist in 2017 and owner of the fastest time this season, put down his gold marker by breezing to a time of 9.98 seconds to set the pace in the opening round and South African Akani Simbine was second best overall in 10.01 ahead of 37-year-old American Justin Gatlin, who opened the defence of his 100m crown by winning his heat in 10.06.
And the title of world's fastest man will be decided on Saturday.
The opening round of the women's 800 metres also began without the event's biggest name, double Olympic champion Caster Semenya,after Swiss Federal Tribunal reversed a ruling that temporarily lifted testosterone regulations imposed on her.
With Semenya ruled out, the gold is on offer and Uganda's Winnie Nanyondo will be among the contenders after posting the top time of the opening round (2:00.36) followed by Jamaica's Pan Am Games champion Natoya Goule (2:01.01).
The long jumpers Ruswahl Samaai and Luvo Manyonga also made their way safely into the final.
Samaai was fifth best in the qualifying round, launching a leap of 8.01m, and while title holder Manyonga settled for 10th place with a 7.91m jump, he also booked his place in the medal contest.