McCullum's century of sixes
2 Times BJ Watling has taken nine or more catches in a Test. In this game, he took six in the first innings and has three in the second so far. He is the second New Zealand wicketkeeper with nine dismissals in a Test, and the first to take nine catches: McCullum had eight catches and a stumping. If Watling takes another catch in Sri Lanka's second innings, it will become only the fifth instance of a wicketkeeper taking ten catches in a Test.
100 Number of sixes for Brendon McCullum in Tests - the joint-highest with Adam Gilchrist. McCullum reached this milestone in his 98th Test, while Gilchrist hit 100 sixes in his 96-match career. Both hit their 99th and the 100th six off Sri Lanka's leading spinner in the match - Gilchrist off Muttiah Muralitharan (consecutive sixes) and McCullum off Rangana Herath. McCullum took 9756 balls to reached this landmark, compared to Gilchrist's 6578.
20 Fifty-plus scores for Kane Williamson in international matches this year - the joint highest with Joe Root. He also completed 2500 runs across all formats this year; he is only the eighth batsman to do so. Kumar Sangakkara and Ricky Ponting have done it twice.
5 Times Williamson has made 50-plus scores in both innings of a Test. He equalled Stephen Fleming and Ross Taylor in this aspect.
2 Previous instances of century partnerships for the second wicket in both innings of a Test for New Zealand. The first instance was at Lord's in 2004, while the second was in Chittagong in 2013-14 against Bangladesh. In this Test, Williamson added century stands with Martin Guptill (first innings) and with Tom Latham (second innings).
9 Earlier instances of the second wicket adding 125 or more in both innings of a Test for any team. In this Test, Williamson and Guptill added 173 runs in the first innings, while Williamson and Latham added 141 in the second. This was the first such instance for New Zealand. Among the nine previous instances, there were three for Australia, two each for India and Pakistan, and once each for England and West Indies.
5 Number of New Zealand openers who have more Test centuries than Latham's three - John Wright (12), Glenn Turner (7), Matt Horne (4), Mark Richardson (4) and Bert Sutcliffe (4). Latham's average of 43.03 as opener is the fourth-highest among New Zealand openers with 1000 or more Test runs.
2 Number of targets higher than 405 that New Zealand have set against Sri Lanka in Tests - 465 in Colombo (RPS) in 1998, and 418 in Hamilton in 1990-91. The highest target successfully chased by Sri Lanka against New Zealand is 93 in Galle in 2012-13.
Bharath Seervi is stats sub-editor at ESPNcricinfo. @SeerviBharath