Bolt hits the heatspublished at 17:50 British Summer Time 4 August 2017
100m heats (20:20 BST)
They have front-loaded the star attractions at this world championships.
Also in opening-day action, is athletics' salesperson of the year for the last decade - Usain Bolt.
The 30-year-old apparently wanted to call it quits on his career last summer at Rio, but his sponsor suggested that a London farewell might suit everyone better.
The 11-time world champion gets the 100m show on the road with heats from 20:20 BST.
The schedulers strategy seems to have worked. More than 660,000 tickets have been sold for the 10 days of action a week before tonight's start
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