Usain Bolt would make history during this weekend 's 100 m final . Bolt says of Blake , who won the 2011 world 100m title after his compatriot 's false start in the final . He 'd match Carl Lewis ' record of back - to - back 100 m titles . But he has got James Blake hot on his heels . Can either one of them break the 9.4s barrier ?
Usain Bolt would make history during this weekend 's 100 m final . He 'd match Carl Lewis ' record of back - to - back 100 m titles . But he has got James Blake hot on his heels . Can either one of them break the 9.4s barrier ?