Oldfield, batting at 41 in the first innings, hooked at a Larwood ball that lifted more than expected. He misjudged it, the ball glanced off the splice into his right temple, and he collapsed. England's fielders, Larwood among them, ran to him; the bowler was visibly shaken. Oldfield staggered to his feet, said 'It wasn't your fault, Harold,' and was led from the field.
The ball had not been bowled with a Bodyline field. That detail was lost in the immediate uproar. The Adelaide crowd, already inflamed by Woodfull's injury two days earlier and by knowledge of the dressing-room scene with Warner, were on the edge of invading the field. Mounted police drew up in line on the western boundary. Bradman would later write that he genuinely believed there was 'a riot waiting to happen.'
Oldfield had a linear fracture of the frontal bone. He was taken to hospital, did not bat in the second innings, and missed the rest of the series. He returned to Test cricket in 1934 and played until 1937, but the Adelaide injury haunted him; he wore a wider, padded cap thereafter and never hooked the same way again.
Australia's Board cabled the MCC on 18 January. The 'unsportsmanlike' wording was provoked at least as much by Oldfield's skull as by Woodfull's chest. England replied tartly, offering to cancel the tour. Only Prime Minister Joseph Lyons's intervention — coupled with the financial cost of an abandoned series — kept the tour alive.