New injury could force Usain Bolt to miss Rio Olympics

Usain Bolt is determined to recover in time to compete at the Rio Olympics after injury forced him out of the Jamaican National Championships.

The 29-year-old sprinter, a six-time Olympic gold medallist and the reigning world champion in the 100m, 200m and 4x100m relay, suffered a hamstring tear during the first round of Jamaica's senior trials in Kingston.