Root took a single off spinner Washington Sundar to complete his 20th Test ton, and raised his bat to an applauding England dressing room in Chennai.
The in-form batsman — who made his Test debut in India in 2012 and is playing after match-winning knocks of 228 and 186 in Sri Lanka — swept the Indian spinners around the stadium as he reached the landmark in 164 balls.
Three hundreds in three consecutive Tests for Joe Root, in 2021:💥 228 v Sri Lanka💥 186 v Sri Lanka💥 100* v Indi… https://t.co/7zrWrplC54
— ICC (@ICC) 1612521563000
He joined England greats Colin Cowdrey and Alec Stewart in getting a hundred in their 100th Test.
Root, however, is the first to score a century in his 98th, 99th and 100th Test.
The 30-year-old Root, who has scored over 8,000 runs at an average of over 49, is the 15th England player in 144 years of Test cricket to have appeared in a hundred matches.