Factbox: Athletics-Thompson-Herah leads Jamaica clean sweep of 100m medals

TOKYO, July 31 (Reuters) - Jamaica's Elaine Thompson-Herah retained her 100 metres title on Saturday in a scorching 10.61 seconds as she smashed the Olympic record and became the second fastest woman ever. Double Olympic champion Shelly-Ann Fraser-Pryce won silver while fellow compatriot Shericka Jackson took bronze. WHAT THEY SAID.