Usman Khawaja hits his first 50 of the series after 19-year-old Sam Konstas demolishes a half-century off 52 balls on debut, taking the attack to India in the fourth Test at the MCG. Follow live.

Sam Konstas was told of his involvement on Boxing Day in training on Tuesday, as Australia aim to take an advantage in the series

Australia heaved a major sigh of relief on Wednesday after skipper Pat Cummins declared run-machine Travis Head fit for the Boxing Day test against India at the Melbourne Cricket Ground. India nemesis Head,

Kostas is set to become Australia men’s youngest Test batting debutant in 71 years with ‘The Baggy Greens' set to roll the dice on a problem position a year out from the Ashes

Most 19 year olds would be overawed by making their Australian Test debut in front of 90,000-plus fans on Boxing Day at the MCG. Not Sam Konstas. The NSW prodigy was parachuted into the Australian XI as an opener after the nation's top order struggles through the first three Tests against India.