`` If everything goes well , I can determine , Usain Bolt tells CNN he can break 100m world record at London 2012 . The Jamaican star set the current world record at 2009 world championships . Score: 6 Linford Christie says Tyson Gay and Justin Gatlin could challenge Bolt .
Usain Bolt tells CNN he can break 100m world record at London 2012 . The Jamaican star set the current world record at 2009 world championships . Score: 6 Linford Christie says Tyson Gay and Justin Gatlin could challenge Bolt .