 Complete the following phrase:  Pulman failed to defend his title, losing 1825 to the eventual champion John Spencer in the first round. He reached the final in 1970 but lost 3337 to Ray Reardon, having earlier recovered from 1427 to 3334. In 1971 he failed to qualify from the round-robin stages that determined the semi-finalists, and in 1972 he lost 2331 to eventual champion Alex Higgins in the quarter-finals. Pulman did not reach as far as the quarter-finals at the world championship until 