Shelly-Ann Fraser-Pryce wins women 's 100m at world championships . Diminutive Jamaican runs fastest time of the season . Another German , Bjorn Otto , took bronze . Build up to event dominated by positive doping tests . Comment:
Shelly-Ann Fraser-Pryce wins women 's 100m at world championships . Diminutive Jamaican runs fastest time of the season . Build up to event dominated by positive doping tests . Comment: