Australia, captained by Ian Chappell and back to full strength after Lillee's recovery from the back stress fractures that had threatened his career in 1973, opened the series at Brisbane on 29 November 1974. England, captained by Mike Denness, had won the previous Ashes in England in 1972 by drawing 2-2 to retain. The visiting bowling attack, built around John Snow, Bob Willis and Tony Greig, was respectable but ageing.
The first Test at Brisbane was a heavy Australian win — Thomson 6/46 in the second innings. The second at Perth — a faster, harder pitch — was worse. England were dismissed for 208 and 293 chasing 615 to win, Thomson and Lillee taking nine wickets between them. By the third Test at the MCG, England's Dennis Amiss, Brian Luckhurst and David Lloyd had all been hospitalised at various points; Lloyd's dismissal at Perth — a Thomson short ball that broke his protector — became a touring legend.
Lillee took 25 wickets in the series; Thomson 33. England lost 4-1, with the only victory coming in the sixth Test at Melbourne after both Australian fast bowlers were injured. Denness dropped himself for the fourth Test at Sydney as a tactical decision, replaced by John Edrich; Edrich was hit on the chest by Lillee's first ball and retired hurt.