Ajinkya Rahane smashed the fastest half-century of IPL 2023 — off just 19 balls — and Ruturaj Gaikwad struck an unbeaten 40 to power Chennai Super Kings to a seven-wicket win over Mumbai Indians here on Saturday.An ordinary Mumbai Indians succumbed to their second consecutive defeat in as many matches while CSK recorded their second win on the trot, moving to the fourth spot in the points table while the five-time winners remained at eighth.The 34-year-old Rahane made a cracking debut for Chennai Super Kings in the IPL,...