Jonny Bairstow’s 113 at the SCG was the 52nd century by a visiting player in Australia batting at No.6 or lower. The score was 36-4 when he came in – the lowest total at the start of any of those 52 centuries.
At the start of the SCG Test, Usman Khawaja’s average in home Tests was 52.9. By the end, it had been silkenly elevated to 58.1, after he became only the ninth player in Ashes history to score two centuries in a Test. The others include Denis Compton and Arthur Morris in the Adelaide Test of 1946/47, a series in which Australia averaged 52.7 runs per wicket as a batting team, 21.9 runs per wicket more than England, which remained a record margin of runs-per-wicket supremacy in an Ashes series until 1989 (57.8 to 27.7), since when it was also surpassed in 2006/07, when Australia also scored 52.7 runs per wicket, twice as many as England’s 26.3.