World 400 meters hurdles champion Jana Rawlinson has vowed to keep competing until the London 2012 Olympics after being ruled out of the Beijing Games with complications from a toe injury. Rawlinson, who returned to competition last week in Poland after nine months out with the injury, withdrew from Australia's Olympic team on Wednesday. “This decision about my athletics career was the hardest decision I've ever made to pull out of the Olympics, especially when I have unfinished business with Athens, and now Beijing,” she said in a televised interview on Australia's Channel Nine. “But I really know I will be strong and ready, mentally and physically, when it comes to London. This is definitely not the end of us.” Rawlinson would have been the gold medal favorite at Beijing after news that Russia's world record holder Yulia Pechyonkina was suffering heart problems and likely to miss the Games.