 The women's team of Shelly-Ann Fraser, Sherone Simpson, Kerron Stewart and Veronica Campbell-Brown were the first on the track, going reasonably well until the third changeover between Simpson and Stewart, which was poorly timed and resulted in the disqualification of the entire team.However, the men's team consisting of Nesta Carter, Michael Frater, Usain Bolt and Asafa Powell were next.Their own runs went without any problems, Powell received the baton from Bolt well ahead of the other teams, crossing the line in both the fastest electronically timed anchor run ever (8.70 seconds), and an overall world-record time of 37.10 seconds.