Manchester United agreed a £20million deal to re-sign Cristiano Ronaldo back in the summer - which isn't even half the price of the world's most expensive racehorse.Back in 2000, global breeding farm Coolmore Stud forked out a staggering $64million (£46million) to buy popular racehorse Fusaichi Pegasus, handing original owner Fusao Sekiguchi an incredible profit.Sekiguchi, a Japanese businessman and Thoroughbred horse racing enthusiast, had only paid $4million (£3million) for the yearling two years earlier when the groundbreaking deal came to his attention.The inspiration behind Pegasus' name was a combination of the owner's own title, 'Fusao', and the Japanese word for one, 'ichi'.The horse lived up to its name by winning six of his first.
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