19 Wickets in the first over of an innings across all formats for Mitchell Starc, the most for any bowler since 2015. Next on the list, with seven wickets each, are Lasith Malinga, Dawlat Zadran and David Willey.
18Number of batsmen Starc has dismissed for a duck in his career. Eight of them are openers.
2006 The previous instance of South Africa losing three wickets inside the first 10 overs of a Test match in the first innings, against Sri Lanka at the P Sara Oval in Colombo. Today they were 27 for 3.
0 Number of specialist spinners to debut at WACA before Keshav Maharaj. Before Maharaj, only nine overs of spin was bowled by a debutant in Perth. Dean Elgar was the last one to do it. He bowled one over during the previous Test between the teams here.
78.40 Quinton de Kock's batting average in 2016, which is the highest among all South Africa batsmen. He has scored three fifties and one hundred this year.
50 Number of wickets taken by Starc at home. He is the fourth left-arm fast bowler to take 50 wickets at home. Since 2015, Starc has taken 22 wickets from five matches at 23.40. Before that, he had taken 28 wickets at 31.28. Mitchell Johnson leads the list with 171 wickets.
106 David Warner's average* at the WACA from eight innings. He has three hundreds with a highest score of 253. The only instance when he did not score a hundred was against South Africa in 2012.
12 Number of times out of 38 fifty-plus scores Warner has made a fifty at under run-a-ball. Ten of those, including today's 39-ball half-century, have come in Australia. Since Warner's debut no other batsmen has made as many fifties under a run-a-ball. Brendon Mccullum is next with seven such instances. No other batsmen has had more than three such instances.
76 Average opening partnership for Australia at home in the last one year. The next best is New Zealand with 43 runs. Warner and Marsh have added 105 so far.
*At end of the first day's play