By scoring a triple century in the Chennai Test, Karun Kaladharan Nair became, at 25 years and 13 days, the sixth youngest in the world to do so. The Jodhpur-born Nair became only the third cricketer—after Garry Sobers (365 not out) and Bob Simpson (311)—to convert his maiden Test hundred into a ‘triple treat’. The turnaround in the Karnataka batsman’s career had, however, come with a triple in the 2014-15 Ranji Trophy final against Tamil Nadu. Nair spoke to Qaiser Mohammad Ali. Excerpts: