Australian Open 2013: Bernard Tomic aims to be Australia's saviour when he faces Roger Federer in third round

They called him Tomic the Tank Engine when he spluttered to a lame, under-motivated defeat against Andy Roddick in last year’s US Open. They called him a hoon – one of the more vivid pieces of local slang – when he was cited for repeated traffic offences in his bright orange supercar.