WALLABY flyhalf Stephen Larkham seems certain to miss at least the start of next month’s rugby union World Cup after suffering another injury. Larkham broke a thumb early in the 46-37 win by the Australian Capital Territory Brumbies over Queensland on Saturday. Larkham was scheduled to have a pin inserted in his left thumb on Sunday night and was expected to be out of action for about four weeks, local media reported. The 25-year-old appears certain to miss the Wallabies’ Cup opener against Romania in Belfast on October 3. Australia’s second match is against Ireland in Dublin a week later.