Bradman had been dropped after the first Test of the 1928-29 Ashes. Returning to Sheffield Shield duty for NSW in early January, he came in against Victoria — Ponsford, Ryder, Woodfull and the off-spin of Don Blackie all in opposition — and proceeded to make a chanceless 340 not out in 488 minutes, with 38 fours.
The Victorian attack was the strongest in Sheffield Shield cricket. Bradman's innings included a stand of 297 with Alan Kippax for the third wicket; he was missed only once, on 280, and his only false stroke was a slash high over slip on 312 that fell safely. The 340* was the highest individual score ever made at the SCG, beating Reggie Duff's 271 of 1903.
The selectors had no choice but to recall him for the third Test at Melbourne, where he made 79 and 112 — his first Test hundred. The 340* at Sydney is the innings that, in retrospect, marked the moment when Bradman's first-class career achieved escape velocity from the rest of Australian batting.