Lucknow, Oct. 6 -- Shreyas Iyer's breathtaking 42-ball maiden T20I century and debutant Naman Dhir's impressive three-wicket haul powered India to a crushing eight-wicket victory over West Indies in the opening T20I of the three-match series at the Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium here on Tuesday.

Iyer remained unbeaten on 102 off 43 balls, hammering 10 fours and six sixes at a staggering strike rate of 237.21, while Dhir returned 3/31 as India first restricted West Indies to 171 before racing to 172/2 in just 14.4 overs to take a 1-0 lead.

The century, completed with a towering six over long-on off Roston Chase, came off 42 deliveries and was the fastest T20I hundred by an Indian against West Indies. It also m...