Daegu (South Korea): Usain Bolt won his heat on Saturday in 10.10 seconds and qualified for semifinals in the 100 meters at the world championships.
The world-record holder from Jamaica is looking to defend his 100 and 200 titles in Daegu, South Korea. Two years ago, the Olympic champion set records in winning both events — just as he did at the 2008 Beijing Games.
Bolt also will be looking for a third gold medal with the Jamaican 4x100 relay team.
Although Bolt said another world record in the 100 is unlikely in Sunday`s final, he is expected to easily retain his title because challengers Asafa Powell and Tyson Gay are injured and not competing.