In the latest news from the Asafa Powell doping trial, the athlete testified to being given injections administered by physical trainer Chris Xuereb after a hamstring injury. Powell adds he was unaware that he would have banned substances in his system, and that a doctor in Germany had given him the same injection with no problems. Powell, as well as Sherone Simpson, tested positive for the substance oxilofrine. Simpson’s hearing was postponed to February 4. Meanwhile, the test results from a lab in Kentucky have been delayed due to the high costs involved.