R Ashwin beat Alastair Cook's outside edge frequently in the morning session, India v England, 5th Test, Chennai, 5th day, December 20, 2016© Associated Press
Karun Nair raises his bat after getting to his triple-century, India v England, 5th Test, Chennai, 3rd day, December 18, 2016© Associated Press
Karun Nair and Ravindra Jadeja added 138 for the seventh wicket, India v England, 5th Test, Chennai, 3rd day, December 18, 2016© Associated Press