British and Irish Lions

The 32-year-old felt a slight strain in his hamstring on Wednesday and will not be risked.

Larkham admitted pushing himself during training and said he had possibly overdone it with too much kicking practice.

He is expected to be fit for the second Test in Brisbane on June 2.

Waratahs fly-half Sam Norton-Knight has been promoted from outside the 22-man squad directly into the starting XV.

Norton-Knight said he felt sorry for Larkham but was "shocked and excited" to be handed his first Australia cap.

Assistant coach Graham Rowntree says The British & Irish Lions will have to be fully focussed to avoid a potential banana skin when they face The Barbarians a week today.

Three former British & Irish Lions will line-up against an England XV at Twickenham Stadium on Sunday as the Barbarians warm-up for their showdown with the 2013 tourists in Hong Kong next week.

Lions skipper Sam Warburton says the lessons he and his Welsh colleagues learnt in Australia last summer will stand them in good stead for their return visit with Britain and Ireland's elite next month.