Bolt, Shelly-Ann Fraser-Pryce complete hat-tricks as Jamaica sweep sprint events

Usain Bolt, already enshrined as one of the greatest Olympians of all time, became the most successful athlete in world championship history when he anchored Jamaica to victory in the 4x100 metres......

Gay sprints to year's fastest 100m to defeat Gatlin

Tyson Gay overcame Olympic bronze medallist Justin Gatlin's quicker start and sped to the year's fastest 100 metres, clocking 9.75 seconds at the US trials for the World championships on Friday.......