Aggressor (horse)

Aggressor
Sire	Combat
Grandsire	Big Game
Dam	Phaetonia
Damsire	Nearco
Sex	Stallion
Foaled	1955
Country	United Kingdom
Colour	Bay
Breeder	Someries Stud
Owner	Sir Harold Wernher
Trainer	Towser Gosden
Record	20:11-4-0
Major wins
Solario Stakes (1957) Doonside Cup (1958) Coronation Stakes (1959) Cumberland Lodge Stakes (1959) John Porter Stakes (1960) Hardwicke Stakes (1960) King George VI and Queen Elizabeth Stakes (1960)

Aggressor (1955 – after 1971) was a British Thoroughbred race horse and sire. In a racing career which lasted from 1957 until July 1960 he ran twenty times and won eleven races. In his first three seasons he showed solid form, winning races including the Solario Stakes, the Coronation Stakes and the Cumberland Lodge Stakes. He reached his peak as a five-year-old in 1960 when he won the John Porter Stakes and the Hardwicke Stakes before recording his biggest success when defeating the outstanding filly Petite Etoile in the King George VI and Queen Elizabeth Stakes.

Aggressor was a powerfully-built bay horse bred at the Someries Stud in Newmarket. He was sired by Combat, an undefeated racehorse whose nine wins included the 1947 Sussex Stakes. His dam, Phaetonia won twice and produced, in addition to Aggressor, the Ormonde Stakes winner High Perch and the Discovery Handicap winner Ben Lomond. As a daughter of the broodmare Phaetusa, she was a member of the same branch of Thoroughbred family 10-d which produced The Derby winner Reference Point.

As a yearling, Aggressor was moved to the Blackhall Stud in County Kildare. When Sir Harold Wernher and his trainer Cecil Boyd-Rochfort visited the stud in 1956 they were unimpressed with Aggressor and sent him to the sales. The colt failed to reach his 1,000 guineas reserve price. Wernher then sent the colt to be trained by Towser Gosden at Lewes, but did not enter Aggressor in any of the British Classic Races.

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