Mixed 4x400m silver caps successful world relay championships for Australia

Van Ratingen, Beer, Thorne and Bull win medal on final dayFour Australian teams book places for Tokyo world championshipsAustralia’s 4x400m mixed relay quartet of Luke van Ratingen, Ellie Beer, Terrell Thorne and Carla Bull are celebrating the country’s second ever silver medal at the World Athletics Relays championship in China after another record-breaking run.The Australian foursome could not match the American champions in Guangzhou on Sunday but, for the second day running, lowe