Sampath Bandarupalli is a statistician at ESPNcricinfo
Quinton de Kock has announced his decision to step away from Test cricket, at just 29 years of age. He had some incredible numbers, both as a batter and as a wicketkeeper, and whoever replaces him will have big shoes to fill...
3250 - Runs as wicketkeeper for de Kock in Test cricket, the second-highest for South Africa, behind Mark Boucher's 5498 runs. de Kock is one of 16 players to aggregate 3000-plus Test runs as a wicketkeeper, and his average of 40.12 is the fifth-highest among those.
6 - Number of Test centuries for de Kock, the second-highest among South African wicketkeepers, behind AB de Villiers' seven. Only seven wicketkeepers have had more Test hundreds than de Kock.
2.37 - Dismissals per innings for de Kock in Tests, the best among wicketkeepers to stand in 25 or more Tests. de Kock's dismissals-per-match average of 4.46 is the second-best behind Tim Paine's average of 4.49.
5 - Test hundreds for de Kock while batting at No. 7. Only Adam Gilchrist (12) and Ian Botham (6) had more centuries while batting at No. 7 in Test cricket. de Kock's Test average of 48.96 at No. 7 is the second-best among the 39 players with 1000-plus runs, behind Brian McMillan (58.38).
0 - Players with more Test runs than de Kock while batting with the tail (batters at No. 8 and lower) since his debut. He scored 1002 runs at an average of 37.11 while batting with the tail. Moeen Ali is the only other batter with 1000-plus Test runs in this period - 1001 runs at 32.29.
46.68 - de Kock's batting average while coming to bat at No. 5 and lower with the team's score below 150. It is the highest among the 22 players to have batted 30-plus times in such situations since his debut. His record of 14 50-plus scores in 39 innings is also the highest percentage of such innings converted into fifty-plus scores among those 22 batters.
1 - de Kock holds the record for being the fastest wicketkeeper to 200 Test dismissals, needing only 46 matches to get there. He shares with Gilchrist the record for the quickest to 100 Test dismissals as a wicketkeeper - in 22 Tests. de Kock was also the fastest to 150 Test dismissals - in 34 Tests, but Paine eclipsed the record last year in 33 matches.
232 - Test dismissals as wicketkeeper for de Kock. Only one wicketkeeper has more dismissals than de Kock in Tests for South Africa - 553 by Boucher. The 232 dismissals effected by de Kock are also the 12th highest for a wicketkeeper in this format.