The ground will be familiar. So will the pressure. On Thursday, Varun Chakaravarthy returns to Chepauk — his home, his people, his pitch — for what is effectively a knockout game for India at the T20 World Cup. The must-win fixture against Zimbabwe comes on the back of a chastening defeat to South Africa, where the Proteas appeared to hand the world a blueprint for dismantling him. And that exposed something uncomfortable: despite the presence of Jasprit Bumrah, India are heavily reliant on Varun in the middle overs. When he has an off day, there is simply no reliable Plan B. The scrutiny, then, is intense. But those who know him best will tell you: he has been here before. It was soon after Varun landed in Chennai following the 2021 T20 World Cup — a tournament India failed to get past the group stages of, one where he had paid the heaviest price. The mystery wasn’t working, and he was the first casualty. Threats flooded his social media. His place in Indian cricket felt …