Athletics: Bolt leads Jamaican quartet into 100 metres final

Usain Bolt led a quartet of Jamaicans into the world 100 meters final later on Sunday to win his semi-final in 9.92 seconds.

Bolt, looking to regain the world title he lost to compatriot Yohan Blake in 2011 after infamously false-starting and suffering disqualification from the final, stepped up his efforts from Saturday's first-round heat. (Reuters)