Bangladesh skipper Mominul Haque won the toss and elected to bat in front of a sell-out Kolkata crowd for the first day-night Test in India on Friday.
Both teams are playing their first pink-ball Test, four years after the innovation made its debut in Adelaide in 2015 to draw bigger crowds and TV audiences.
Tickets are sold out for the first four days at Eden Gardens, in contrast to the sparse crowds that often watch day-time Tests in India.
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