The Adelaide leak was the revelation to the press of a dressing-room incident during the third Test, a cricket match played during the 1932–33 Ashes series between Australia and England, more commonly known as the Bodyline series. During the course of play on 14 January 1933, the Australian Test captain Bill Woodfull was struck over the heart by a ball delivered by Harold Larwood. Although not badly hurt, Woodfull was shaken and dismissed shortly afterwards. On his return to the Australian dressing room, Woodfull was visited by the managers of the Marylebone Cricket Club (MCC) team, Pelham Warner and Richard Palairet. Warner enquired after Woodfull's health, but the latter dismissed his concerns in brusque fashion. He said he did not want to speak to the Englishman owing to the Bodyline tactics England were using, leaving Warner embarrassed and shaken. The matter became public knowledge when someone present leaked the exchange to the press and it was widely reported on 16 January. Such leaks to the press were practically unknown at the time, and the players were horrified that the confrontation became public knowledge.
In the immediate aftermath, many people assumed Jack Fingleton, the only full-time journalist on either team, was responsible. This belief may have affected the course of his subsequent career. Fingleton later wrote that Donald Bradman, Australia's star batsman and the primary target of Bodyline, was the person who disclosed the story. Bradman always denied this, and continued to blame Fingleton; animosity between the pair continued for the rest of their lives. Woodfull's earlier public silence on the tactics had been interpreted as approval; the leak was significant in persuading the Australian public that Bodyline was unacceptable.