KL Rahul plays a shot against Punjab Kings at the Arun Jaitley Stadium. (Express Photo | Praveen Khanna) At 34, KL Rahul is no spring chicken. He last played T20 Internationals for India three-and-a-half years ago. In the interim, younger batsmen have moved up in the T20 universe. A 15-year-old opener, Rajasthan Royals ’ Vaibhav Sooryavanshi, with a bat swing to die for, has been the flavour of the season. 24-year-old Priyansh Arya, playing for Punjab Kings at the top of the order, has received high praise, and rightly so. Sunrisers Hyderabad ’s Abhishek Sharma ’s expanding wagon-wheel arch has made life difficult for bowlers. There’s no stopping Sanju Samson in Chennai Super Kings ’ canary yellow when he gets going. But none of them has the repertoire of shots to match Rahul, who recorded the highest individual score by an Indian batsman in the IPL on Saturday. Playing against the Punjab Kings, Rahul scored an unbeaten 152 in just 67 balls.…