Ravichandran Ashwin scored his sixth test hundred as he and Ravindra Jadeja dug India's cricketers out of trouble against Bangladesh on day one of the first test.

An unbeaten century by Ravichandran Ashwin leads India's fightback from a poor start against Bangladesh on day one of the first Test in Chennai.

A series sweep against Bangladesh will cement India's place atop the World Test Championship (WTC) standings but the team under Rohit Sharma are guarding against any complacency in the two-match home series beginning in Chennai on Thursday.

Bangladesh captain Najmul Hossain Shanto won the toss on Thursday and decided to send India in to bat in the first cricket test. India was playing a test for the first time since March when it beat England 4-1 in a five-match series in India.

Bangladesh skipper Najmul Hossain Shanto won the toss and elected to field against India in an overcast Chennai on Thursday in the first of two Tests.

India went into Stumps on Day 1 with their score reading 339/6 in 80 overs. The new ball will due first thing today. The partnership between Ashwin and Jadeja stood at 195 in 227 balls for the seventh wicket.

R Ashwin scored a brilliant century on Day 1 of the first Test in Chennai, lifting India from a precarious position. His partnership with Ravindra Jadeja helped India recover from 144 for 6 to 339 for 6 by the end of the day.