Elaine Thompson-Herah became the second-fastest woman in history as she beat fellow Jamaican Shelly-Ann Fraser-Pryce to defend her Olympic 100m title.
The 29-year-old ran 10.61 seconds, just 0.12secs short of the world record set 33 years ago by American Florence Griffith-Joyner.
Shericka Jackson completed a Jamaican one-two-three in Tokyo with a time of 10.76, 0.02 behind Fraser-Pryce.
Great Britain’s Daryll Neita finished eighth in 11.12.
However, team-mate Dina Asher-Smith failed to qualify for the final and then withdrew from the 200m after revealing she tore her hamstring earlier this month.
“I have been struggling with my injury back and forth,” Thompson-Herah told BBC Sport after victory.
“I see all the bad comments. I take all of my losses, all of my defeats and I use them as my motivation.”
