Noah Lyles and Sha'Carri Richardson, the two faces of the World Athletics Championships, won their third and second golds respectively by anchoring the United States to 4x100m relay triumphs in Budapest on Saturday.
The 29-year-old Jamaican's victory was never in doubt as she ran a superb bend to enter the straight with a clear lead and finished in a stunning 21.41sec, leaving the others to battle for the minor medals.
Lyles, who charged to 100m gold last weekend, clocked 19.52sec for the win with teenage teammate Erriyon Knighton claiming silver in 19.75sec.
Kipyegon produced an imperious front-running performance to add to her 2017 and 2022 titles, her face creasing in joy as realisation of her feat struck home.
Richardson sprinted to a championship record of 10.65sec despite being in lane nine to seal a US 100m double after Noah Lyles' victory in the men's event on Sunday.
Lyles, who already has two world 200m titles to his name and will go for a third in the Hungarian capital, clocked 9.83sec -- the fastest 100m time of the season so far -- for victory.
Bangladesh’s fastest sprinter Imranur Rahman eased through the preliminary qualifying round of the 100m sprint in the World Athletics Championship in Budapest, Hungary today.
Armand Duplantis wrapped up the World Athletics Championships in Eugene in stunning fashion on Sunday, setting a new world record in the pole vault as the curtain came down on the 10-day global track and field extravaganza.
French world record holder Kevin Mayer regained the world decathlon title with a late surge on Sunday, climbing from sixth overnight to clinch gold after Olympic champion Damian Warner withdrew through injury.
Bangladesh's fastest man Imranur Rahman could not participate in the World Championship heats, despite qualifying with flying colours, due to a groin injury.