Hammond had emerged in 1927 with 1,000 runs by end of May; in 1928 he had scored a maiden Test hundred in South Africa. The 1928-29 Ashes in Australia was the series in which his domination of Test bowling became total. Across five Tests he scored 905 runs in nine innings — 251, 200, 32, 119*, 177, 38, 19, 11, 16, 38. He hit double-centuries in successive Tests (Sydney and Melbourne), passed 100 four times, and averaged 113.12.
The innings that defined the series was the 251 at Sydney in the second Test in December 1928, made in 461 minutes against the wrist-spin of Grimmett and Mailey and the pace of Gregory and Wall. The 200 at Melbourne in the third Test came in 398 minutes; the 119* at Adelaide in the fourth Test was made in a chase of 332 that England won by 12 runs. The series was won by England 4-1 — the first English Ashes win in Australia for 17 years.
The 905-run series record stood as the highest aggregate by any batsman in a Test series until Garry Sobers's 824 in 1957-58 came close, and was definitively passed only by Sir Donald Bradman's 974 in the 1930 Ashes — the immediate response of Australia's emerging master to Hammond's 1928-29 dominance.