Thorpe's winning streak was interrupted in the 100 m freestyle when his personal best of 48.81 s placed him fourth, but he returned to form in the 4 × 200 m freestyle relay. Anchoring the team of Klim, Hackett and Kirby, the Australians lowered their world record time by more than two seconds, leaving the Italians more than six seconds in arrears. Having overtaken Klim as Australia's leading 100 m freestyle swimmer, Thorpe was entrusted with anchoring the 4 × 100 m medley relay team on 28 July. After Matt Welsh, Regan Harrison and Geoff Huegill had finished their legs, Thorpe's change left him half a body length behind the new 100 m world champion Anthony Ervin of the United States. The Americans were expected to win, and with his typically slow start, Thorpe turned a body length behind with 50 m remaining. With an American victory seeming inevitable, Thorpe managed to accelerate and deprive Ervin of the lead in the last 5 m. This made Thorpe the only swimmer to have won six gold medals at a World Championships, and the first since Shaw in 1974 to win the 200–400–800 treble. His performances formed the basis for Australia's gold medal win over the United States 13–9. It was also the first time since the 1956 Summer Olympics that Australia had topped the medal tally at a global meet. Thorpe's achievements led to predictions that he could match Mark Spitz's seven gold medals at the 1972 Summer Olympics, which he played down.