In Osaka,2007, who won the women's 100m? Wasn't it Lauryn Williams, from close scrutiny? Watch YouTube slo-mo

The finish of a race is judged on the runner's torso, nothing else counts. So she could have crossed the line with her entire body parts except the torso, which is usually the chest and not win. It took them and the computer a long time to decide the winner, so it was a very close race. Nothing is going to change it now.