Rocky Elsom has been sacked as Wallabies skipper.In a stunning move the Australian Rugby Union announced today Queensland second rower James Horwill will lead Australia to next months Rugby World Cup in New Zealand.Horwill led Queensland to the Super 15 title.Horwill will become Australia"s 77th Test captain when the Wallabies have their final hit out before the game"s showpiece event in New Zealand by taking on the All Blacks in next week''s final Tri-Nations Test in Brisbane.