Usman Khawaja's ton on Test comeback has put Australia in pole position in the fourth Ashes encounter at the Sydney Cricket Ground. It was the ninth Test hundred for the elegant left-hander and his second against England at this venue. Khawaja punched the air in delight as he whipped Jack Leach to short fine leg to collect a brace. Australia head into the Tea break at 321/6, with skipper Pat Cummins giving the centurion company in the middle. Khawaja received a rousing round of applause on his way back to the change room.