ADELAIDE (Reuters) - A little over a year ago, Nathan Lyon was an Adelaide Oval groundsman watching from the sidelines as Australia crashed to an innings defeat on their way to a humiliating Ashes series defeat. On Friday at the same ground, he took three wickets for 57, including what could be final dismissal of Sachin Tendulkar in a test on Australian soil, to put his country on the brink of a 4-0 series sweep over India. ...