Though Kerala Blasters battled valiantly, Chhetri scored the winner with a brilliant header in the 55th minute to preserve his side's unbeaten record in the ISL.
Images from the Euro 2020 Qualifiers played on Monday
ATK's David Williams scored the all-important goal in the 48th minute to seal the win on a day when Chennaiyin FC did everything but score.
A round of Saturday's matches in Series A, La Liga and Bundesliga.
Real Madrid produced a gutsy performance to earn a 1-0 win at Sevilla, on Sunday, which took them level on points at the top of La Liga
Ellen White scored her fifth goal of the tournament in between Jill Scott's opener and a Lucy Bronze screamer from the edge of the area as Phil Neville's side set up a mouthwatering clash with either holders the United States or hosts France.
Alexis Sanchez shrugged off an ankle injury and continued his resurgent form at the Copa America. The Chile striker fired his side to a 2-1 victory over Ecuador on Friday which took the holders into the quarter-finals of the competition.
Germany scored five times in 27 minutes in the first half to crush Estonia 8-0 and make it three wins in three Euro 2020 Group C qualifiers.
News of all that's transpired on and off the football field.
Kane rolled his ankle painfully just before the hour mark after a hefty tackle on City defender Fabian Delph.
Darryl D'Monte mentored more journalists than any other editor of his generation. Some of the biggest bylines owe their beginnings in our glorious profession to this wonderful human being.
The aggregate score read 4-2 in favour of the Blues who will now look to land their first ever ISL title on Sunday.
News of all that's transpired on and off the football field.
Unbeaten Liverpool have 45 points from 17 games with champions Manchester City, who beat Everton 3-1 on Saturday, a point behind.
News of all that's transpired on and off the football field
Australian great Tim Cahill opened his goal account in the Hero Indian Super League but that wasn't enough to prevent Kerala Blasters from holding Jamshedpur FC to a 2-2, in Jamshedpur, on Monday.
News of all that's transpired on and off the football field
A double strike from Sunil Chhetri and another fine finish from Miku set up an impressive 3-0 win for Bengaluru FC against FC Pune City in the Indian Super League football match, in Pune, on Monday.
News of all that's transpired on and off the football field
Brazil's defensive record under coach Tite has been remarkable, with only six goals conceded in 25 matches, and they have been just as miserly in Russia where they have only conceded one goal.