2006 The last time South Africa lost a Test series overseas, whitewashed 2-0 by Sri Lanka. Between then and now, they had remained unbeaten in 15 consecutive away series. That streak is only bettered by West Indies' 18 consecutive series from 1980 to 1995.
7/66 R Ashwin's figures in the second innings. They are his best in both Tests - beating the 7 for 103 he took against Australia in Chennai in 2012-13 - and first-class cricket. JP Duminy, in South Africa's second innings, became Ashwin's 300th first-class wicket. He added three more to that tally and averages 26.90.
15 five-wicket hauls for Ashwin - equalling the most taken by any spinner in their first 31 Tests. Australia's Clarrie Grimmett had been the sole record-holder until today, while South Africa's Hugh Tayfield is third on this list with 14.
169 Wickets by Ashwin - the most by a spinner in his first 31 Tests beating Grimmett's tally of 164. A broader search including all kinds of bowlers indicates only two have been better wicket-takers than Ashwin after their first 31 Tests. England seamer Sydney Barnes with 189 wickets (in 27 Tests) tops the charts while Pakistan fast bowler Waqar Younis took 180 wickets at 18.78.
55 Wickets for Ashwin in 2015, the most by any bowler. It is also only the 12th time an Indian has taken 50 or more wickets in a calendar year, Harbhajan Singh was the last to the mark with 63 wickets in 2008. Ashwin's six five-fors this year also equals the most by an Indian in a year.
17.81 Ashwin's bowling average in 2015 - currently the third-best for any spinner with at least 50 wickets in a calendar year. Only Muttiah Muralitharan, who averaged lower in two separate years, has done better. Muralitharan took 55 wickets at 17.80 in 2002 and 90 at 16.90 in 2006. Ashwin's strike rate of 34.20 this year is the second-best for any bowler who has taken at least 50 wickets in a year. Only Waqar has done better: he took 55 wickets at 29.50 in 1993.
1 Instance since 1900 when a Test ending with a decisive result had an individual top score lower than the 40 scored by M Vijay in this Test. And it had come quite recently: Rahul Dravid had top-scored with 39 in the Hamilton Test in 2002-03 that New Zealand won. Overall, this was only the 14th Test without an individual fifty to end in a result.
1 Instance when a bowler has returned better match figures against South Africa since their return to Test cricket than Ashwin's 12 for 98 in this match. Muttiah Muralitharan took 13 for 171 in Galle in 2000.
1912 The last time South Africa's batsmen averaged worse in a series involving three or more matches. Their average on this tour of India has been 14.32, with only two fifties from 55 innings, but they had averaged 11.30 in three Tests against England 103 years ago. Overall, batsmen from both teams have together have averaged just 16.90, which is also the third-worst in any series involving three or more Tests.
8 Batsmen who were dismissed for scores between (and including) 30 and 40 in this Test. The last Test that had eight or more such scores was the Ashes Test in Sydney in 2010-11. Overall, there are only eight such instances.
13 South Africa batsmen who were dismissed for single digits in this Test, which makes it the fourth time that at least 13 batsmen fell between 0 and 9 since their readmission to Test cricket. The last time was against Sri Lanka in Colombo in 2004.
14.85 Runs conceded per wicket by India's bowlers against South Africa so far - the best they have averaged in a series with more than one Test. Their previous best was against New Zealand in 1995-96, when they had averaged 18.51. India's bowling average is also the fifth-best for a team in a series with at least two Tests since 1950. The last time a team did better was in 2012-13, when West Indies' bowlers had averaged 14.47 against Zimbabwe, taking 40 wickets in two Tests.
2012 The last time a South African pair lasted more deliveries in an away Test than the 278 by Hashim Amla and Faf du Plessis in the Nagpur Test. Du Plessis was there again, with AB de Villiers in Adelaide, when they faced 408 deliveries for 89 runs. This was South Africa's fourth-longest fourth-innings stand in away Tests (since balls faced information is available for partnerships). This was also the longest stand of the series bettering the 184 balls by Cheteshwar Pujara and M Vijay in the second innings of the Mohali Test.
Shiva Jayaraman is a senior sub-editor (stats) at ESPNcricinfo.com