new grandstand in place of the war damaged section of the stadium. They also introduced new perforated tote tickets following continual losses on forged tote tickets every Saturday to the tune of £1,000. Ballymac Ball was the next greyhound to win the Derby for Wimbledon, the brindle dog winning the 1950 event for Stan Martin. In 1950 the Instaprint photo timer was tested at Wimbledon, and given the seal of approval to use throughout Britain. Con Stevens continued to manage the stadium throughout the 1950s, overseeing the success of the track. A fifth Derby success came in 1957, after the Dennis Hannafin (brother of Jerry) trained Ford Spartan took the title. In 1958 Paddy Fortune died, and his kennels were taken over by George Waterman. Within a few months, Sidney Orton retired and his son Clare Orton took up his position at Wimbledon, with Clare having been a trainer in his own right for nearly ten years. 1960s Phil Rees Sr. joined the track as a trainer in the 1960s following the retirement of Dennis Hannafin, and the Greyhound Express Merit Puppy Championship was renamed the Juvenile in 1963. George Waterman died, and his Burhill kennel range was given to new trainer Nora Gleeson. The three-time Derby winning trainer Paddy McEvoy also joined the track in the late 1960s. Towards the end of 1969, the possibility of the stadium being redeveloped became a possibility, but the Greyhound Racing Association bought a major stake in Wimbledon after a prolonged battle against developers. 1970s Murmurings about redevelopment remained as GRA Property Trust continued to buy and sell stadiums, but the GRA chose to invest in the stadium, raising the winning prize money levels of the Laurels to £2,000 in 1970 and £5,000 one year later. In 1972, the GRA sealed a deal to buy Wimbledon Stadium outright, and bring the track fully under the GRA banner. Paddy McEllistrim and Stan Martin both retired in 1974, and were replaced by Paddy's daughter Norah, and by Sam Sykes, a former head lad to Clare Orton. Con Stevens resigned from the board of directors at Wimbledon, bringing to an end his 46 years of association with the track. Wimbledon introduced new technology in 1976 after using a sectional timing mechanism, and were one of the first tracks to use the system of grading (selecting greyhounds in classes on ability). In the same year, Mutts Silver,