How many times did jockey Lester Piggott win the English Derby horse race?

Lester Keith Piggott (born 5 November 1935) is a retired English professional jockey. With 4,493 career wins, including nine Epsom Derby victories, he is widely regarded as one of the greatest flat racing jockeys of all time and the originator of a much imitated style. Popularly known as "The Long Fellow" he was known for his competitive personality, keeping himself thirty pounds under his natural weight.

Piggott began racing horses from his father's stable when he was 10 years old and won his first race in 1948, aged 12 years, on a horse called "The Chase" at Haydock Park. Piggott is known for his quiet demeanour. He describes his mother as wisely downplaying his success, while his father rarely gave advice unless there had been a particular mistake. By his teens a sensation in the racing world, he rode his first winner of The Derby on 'Never Say Die' in 1954 aged 18 years and went on to win eight more, on 'Crepello' (1957), 'St. Paddy' (1960), 'Sir Ivor' (1968), 'Nijinsky' (1970), 'Roberto' (1972), 'Empery' (1976), 'The Minstrel' (1977) and 'Teenoso' (1983).