 Complete the following phrase:  Defending champion John Spencer lost to Perrie Mans in the first round of the 1978 championship. The 1977 runner-up Cliff Thorburn was defeated 1213 in his quarter-final match against Eddie Charlton, who won the last five frames. However, Charlton then lost to Ray Reardon in the semi-finals; he was ahead 129 after the first three sessions of the match, but Reardon won all seven frames of the fourth session to win 1814. Mans met sixty-four-year-old Fred Davis in the other semi-final, defeating him 1816. Reardon won the final 2518 to claim his sixth world title. He became the oldest World Champion, aged . The first seven World Snooker Champions all won a championship when in their forties; the last of these was Reardon. It would be another forty years before a quadragenarian won the title again, as Mark Williams won the 