If there is any batsman in world cricket who has undergone the brutal tests of sport, it is KL Rahul. But over the years, the Indian white-ball vice captain has fought, and fought hard. KL Rahul’s Test debut, or international debut for that matter, was far from impressive. It was chaotic, confused, and disorganized. The year was 2014, and up against the likes of Mitchell Johnson, Ryan Harris, Josh Hazlewood, Shane Watson and Nathan Lyon, on Boxing Day at the ever-intimidating MCG, the then…