Jamaica’s Kishane Thompson sends Olympic warning with 9.77sec 100m

• 22-year-old's time is fastest in the world for two years
• Shelly-Ann Fraser-Pryce heading to fifth Olympics

Jamaica's newest 100m champion sent a message after his victory, insisting he was slowing down towards the end of a race in which he ran the fastest time in the world in two years.

Kishane Thompson won Jamaica's 100m national championship in 9.77 seconds on Friday night, setting himself up as a threat to join his country's greatest sprinter, Usain Bolt, as an Olympic champion next month.