Australia expect physical battle despite Wales dropping Jamie Roberts

• Wales consider playing Gloucester fly-half Owen Williams at inside-centre• ‘We are not expecting them to be different,’ says Tevita KuridraniWales may have dropped the talisman of the Warrenball era, Jamie Roberts, from their squad for the autumn internationals as they ponder playing two fly-halves, but Saturday’s opponents, Australia, are expecting their usual physical workout in Cardiff.When Wales hosted Australia nine years ago, Roberts played on for 15 minutes after suffering a fractured skull in a collision with his midfield opposite number Stirling Mortlock. It was the end of Warren Ga…