Australia's aging post-war team broke up after 1926, with Collins, Charlie Macartney and Warren Bardsley all departing, and Gregory breaking down at the start of the 1928–29 series.
Despite the debut of Donald Bradman, the inexperienced Australians, led by Jack Ryder, were heavily defeated, losing 4–1.[14] England had a very strong batting side, with Wally Hammond contributing 905 runs at an average of 113.12, and Hobbs, Sutcliffe and Patsy Hendren all scoring heavily; the bowling was more than adequate, without being outstanding.
In 1930, Bill Woodfull led an extremely inexperienced team to England.
Bradman fulfilled his promise in the 1930 series when he scored 974 runs at 139.14, which remains a world record Test series aggregate. In the Headingley Test, he made 334, reaching 309* at the end of the first day, including a century before lunch. Bradman himself thought that his 254 in the preceding match, at Lord's, was a better innings. England managed to stay in contention until the deciding final Test at The Oval, but yet another double hundred by Bradman, and 7/92 by Percy Hornibrook in England's second innings, enabled Australia to win by an innings and take the series 2–1. Clarrie Grimmett's 29 wickets at 31.89 for Australia in this high-scoring series were also important.
Australia had one of the strongest batting line-ups ever in the early 1930s, with Bradman, Archie Jackson, Stan McCabe, Bill Woodfull and Bill Ponsford. It was the prospect of bowling at this line-up that caused England's 1932–33 captain Douglas Jardine to adopt the tactic of fast leg theory, also known as Bodyline.

Bill Woodfull evades a ball from Harold Larwood with Bodyline field settings.
Jardine instructed his fast bowlers, most notably Harold Larwood and Bill Voce, to bowl at the bodies of the Australian batsmen, with the goal of forcing them to defend their bodies with their bats, thus providing easy catches to a stacked leg-side field. Jardine insisted that the tactic was legitimate and called it "leg theory" but it was widely disparaged by its opponents, who dubbed it "Bodyline" (from "on the line of the body"). Although England decisively won the Ashes 4–1, Bodyline caused such a furore in Australia that diplomats had to intervene to prevent serious harm to Anglo-Australian relations, and the MCC eventually changed the Laws of cricket to curtail the number of leg side fielders.
Jardine's comment was: "I've not travelled 6,000 miles to make friends. I'm here to win the Ashes".[15]
Some of the Australians wanted to use Bodyline in retaliation, but Woodfull flatly refused. He famously told England manager Pelham Warner, "There are two teams out there. One is playing cricket; the other is making no attempt to do so" after the latter had come into the Australian rooms to express sympathy for a Larwood bouncer had struck the Australian skipper in the heart and felled him .[16]