Australia’s rivalry with India turned physical as Virat Kohli collided with 19-year-old Australia batter Sam Konstas on the opening morning of the fourth test.

Australia Test debutant Sam Konstas hits a pulsating half-century on a thrilling opening day of the fourth Test against India.

Teenage debutant Sam Konstas has propelled Australia to 6-311 at stumps on day one at the MCG after one of the most memorable Boxing Day innings.

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.