Elgar's best, Duminy's second-best
1 Number of bigger partnerships for South Africa in Tests against Australia than the 250-run stand between JP Duminy and Dean Elgar. Eddie Barlow and Graeme Pollock had added 341, also for the third-wicket, in Adelaide in 1963-64, which is the highest for South Africa against Australia. The Duminy-Elgar stand is the second-highest third-wicket partnership in Australia in the last 20 years and the sixth-best overall.
3 Test centuries for Duminy against Australia, in 18 innings. Two of his three centuries against Australia have come in Australia. Against other teams, he has scored two centuries in 40 innings. His top-three scores have come against Australia; his 141 at the WACA being his second-best.
121 The previous best for Elgar in Tests, which had come against West Indies in Port Elizabeth in the Boxing Day Test of 2014. He bettered it with his 127 in this match, which is his fifth century. Only three players have scored more Test centuries than Elgar after bagging a pair on Test debut - Graham Gooch (20), Marvan Atapattu (16) and Saeed Anwar (11). Elgar's pair, on debut in 2012-13, was also at the WACA.
0 Centuries in the second innings of a Test for both Duminy and Elgar before this match. Both scored their maiden second-innings hundreds and their fifth overall, at the venue where both had made their Test debuts: Duminy in 2008-09 and Elgar in 2012-13.
66.40* Average runs per wicket for South Africa in the third and fourth innings of Tests at the WACA - their best at any venue where they have played more than two Tests. Before this Test, they had made 287 for 5 in 2005-06, 414 for 4 in 2008-09, and 569 in 2012-13. South Africa's average runs per wicket in the first two innings of Tests at the WACA is 26.10, their fourth-lowest at a venue where they have played more than two Tests.
381 Australia's highest fourth-innings total at the WACA, against New Zealand in 2001-02. Australia's highest fourth-innings total overall is 406 and their highest successful chase is 404, in Leeds in 1948. South Africa's lead was 388 at the end of day 3.
103* Nathan Lyon's average in the third and fourth innings of Tests at the WACA, by far his worst at any home venue. In his 72 overs, he has picked up three wickets in four innings. All those three wickets came in one innings and he went wicketless in the other three innings, including this match.
*Numbers updated till the end of day three of the ongoing Test at the WACA.
Bharath Seervi is stats sub-editor at ESPNcricinfo. @SeerviBharath