317 - The margin of victory, India's largest, in terms of runs, in a Test against England. The previous highest was 279 runs, at Headingley in 1986. India have also beaten England six times by an innings.
2 - Instances of R Ashwin scoring a century and taking eight wickets in a Test; he had earlier achieved the feat against West Indies in Mumbai in 2011, when he scored 103 and took 9 for 117 in a memorable drawn Test which ended with scores level: India finished on 242 for 9 chasing 243 for victory. No other India allrounder has managed this in a Test.
9 - India bowlers who have taken a five-for on debut; Axar Patel became the latest to join this group with his 5 for 60 in England's second innings. The only other left-arm spinner in this group is Dilip Doshi, who took 6 for 103 against Australia in Chennai in 1979.
21 - Test wins in India for Virat Kohli the captain. He equals MS Dhoni's record for most wins by an Indian captain at home. Overall, India have won 34 Tests under Kohli, which is seven clear of the next-best, 27 under Dhoni.
10 - Instances of Ashwin dismissing Ben Stokes in Tests. Stokes averages 17.8 against him. Stokes and David Warner are the two batsmen who have been dismissed most often by Ashwin in Tests. Both average less than 20 against him.
298 - England's match aggregate, their third-lowest in a Test against India in which they lost 20 wickets. Their lowest is 230 (102 and 128) in that Headingley Test in 1986. It is their second-lowest in any Test in Asia.
4 - Instances of a team winning the second Test of a series by 200-plus runs after losing the first by a similar margin. The three previous instances were by South Africa in England in 2017, by South Africa at home against Australia in 2014, and by West Indies in England in 1950. On both occasions when South Africa fought back to win the second Test, they ended up losing the series, 3-1 to England and 2-1 to Australia.
0 - Half-centuries for Joe Root in the match; it is the first time Root hasn't passed 50 in a Test, in the eight matches he has played against India.
8.16 - England batsmen's average when playing the sweep shot in this Test - they scored only 49 runs off the shot and were dismissed six times. In the first Test, they averaged 38.75 when playing the shot, scoring 155 runs for four dismissals.
15 - Test wins for India at Chepauk, which is their highest at any venue. They have 13 wins in Delhi and Kolkata each.
238.9 - Moeen Ali's strike rate in the second innings: he scored 43 off 18. It is the highest by an England batsman for any innings of 15 or more balls (in matches where balls-faced data is available). For all teams, this is the second-best, next to Abdur Razzak's 17-ball 43 against Zimbabwe in 2011.

S Rajesh is stats editor of ESPNcricinfo. @rajeshstats