In the first round, Jack Mullan’s 77 pound Wonder Valley recorded an extremely fast 29.47, propelling himself to competition favourite. The dark brindle dog had not performed well in the 1964 English Greyhound Derby going out in the first round but he followed up his first round win with an even faster time of 29.27 in round two.[3]
The Derby looked destined to go to Wonder Valley who was described by some of the press as one of the fastest greyhound's that they had ever seen. The best of the others in round two were Chubby Crackers (29.44), Gleaming There (29.55) and Granada Chief (29.71), Rex Again (29.83) and Bannside King (29.95).[4]
In the semi-finals Wonder Valler missed the break stumbling out of the traps and looked destined to be knocked out but he recovered a ten length deficit to qualify for the final in second place. Chubby Crackers beat Picture Reply and Jet Control beat Granada Chief in the other two semi-finals.[4]
In the final Wonder Valley soon took the lead from Picture Reply by the second bend and his back straight pace pulled him clear as he crossed the line to win in 29.30. Wonder Valley never had the chance to win further competitions because he was retired to stud in the United States.[4]