Melbourne, Australia - David Rudisha had his first race over 800m for 2010 as the IAAF World Challenge 2010 kicked of at the Melbourne Track Classic on Thursday night, and produced something special again. He predicted a 1:43 and delivered on the talk, running 1:43.15. Ryan Gregson took almost a full second off his previous best in second place, but his 1:46.04 saw him almost a full three seconds adrift.

+ Live results and a live audio stream will be available at athletics.com.au

IAAF World Challenge meet at Olympic Park, Melbourne. Mainly interviews - limited meet vision due to media rights held by Network Ten, who will show packaged highlights on Sunday 25 April @ 1:30pm.

Features Melissa Breen, Bola Lawal, Andrew Boudrie, Jody Henry, Tamsyn Lewis, Kurt Fearnley, Bridey Delaney, Kaila McKnight, David Rudisha, Ryan Gregson, Alex Rowe.

IAAF World Challenge meet at Olympic Park, Melbourne. Mainly interviews - limited meet vision due to media rights held by Network Ten, who will show packaged highlights on Sunday 25 April @ 1:30pm.

Features Ben Offereins, Sean Wroe, Mary Cullen, Nikki Chapple, Dani Samuels, Jeff Riseley, Jordan Williamsz, Dan Martin.