Boult's century, and Sri Lanka's collapse

303 The first-innings lead for New Zealand, which is their third-highest in a Test against Sri Lanka. Their best is 364, in Dunedin in 1997, while they led by 311 in Wellington in 2005. New Zealand won both those Tests.

3-15 Sri Lanka's draw-loss record in the 18 Tests when they've followed on. New Zealand have a 12-5 win-draw record when they've enforced the follow on.

28 The number of times Sri Lanka have been bowled out in under 50 overs in a Test innings. Sixteen of those have been in overseas, including each of the last five instances. Their total of 138 is their third-lowest against New Zealand.

8 Number of times, out of 25 innings, that Sri Lanka have been five down for less than 100 runs in a Test in New Zealand. Fourteen times they have lost half the side for less than 150.

102 Trent Boult's wickets tally in Tests. He has become the 13th New Zealand bowler to take 100 or more Test wickets.

23.54 Boult's average in 11 Tests in New Zealand, where he has taken 48 wickets at a strike rate of 50.4 balls per wicket. In overseas Tests he has 54 wickets in 18 matches at an average of 30.90.

1094 Angelo Mathews' aggregate in Tests in 2014. He has scored those runs in 19 innings, at an average of 78.14, with two hundreds and seven fifties.

108 Lahiru Thirimanne's aggregate in nine Test innings in 2014, at an average of 12. His highest this year is 38.

84 The opening partnership so far between Dimuth Karunaratne and Kaushal Silva in Sri Lanka's second innings. Only once have Sri Lanka added more runs for the first wicket when following on: against West Indies in Galle in 2010 when Tharanga Paranavitana and Tillakaratne Dilshan added 102 in a drawn game.

2 The number of times in Test history that the opening partnership in the follow-on innings has exceeded a team's first-innings total. Against West Indies in Barbados in 1958, Pakistan's opening partnership added 152 in their second innings after they had been bowled out for 106 in the first; in 1924 at Edgbaston, South Africa's opening wicket added 54 when following on after being bowled out for 30 in their first innings. Pakistan saved the Barbados Test, but South Africa lost by an innings and 18 runs. Sri Lanka's opening pair is currently 55 runs from overtaking their first-innings total.