The ongoing fourth Test between India and Australia will be remembered for ages as the fans got to witness a heroic century from Virat Kohli which came after a long gap of more than years in the Test format. The former India skipper smashed 186 on Day 4 and guided Team India to a total of 571, with the hosts taking a lead by 91 runs. Apart from Kohli, it was youngster Shubman Gill, who also struck his second Test ton on Day 3 and gave India a brilliant start. With this century, Gill stood on the expectations of the fans and the selectors as he paved his way into the team after replacing an out-of-form KL Rahul. As the Rohit Sharma-led side is on the cusp of qualifying for the World Test Championship final, veteran India wicketkeeper Dinesh Karthik feels that Rahul can be used as a good backup option behind the stumps.