1997 & 1998: early career

Agnes World began his racing career with a win in a maiden race over 1200 metres at Hakodate Racecourse on 7 June 1997. In July he was stepped up in class for the Grade III Hakodate Futurity Stakes over the same course and distance and won again, beating Saratoga Beauty in a record time of 1:09.8. After the mid-season break, the colt returned to contest Japan's most prestigious race for two-year-olds, the Grade I Asahi Hai Futurity Stakes over 1600 metres at Nakayama Racecourse and finished fourth behind Grass Wonder. On his final start of the year, Agnes World won over 1600 metres on dirt at Kawasaki Racecourse on 27 December.^[6]

On his three-year-old debut, Agnes World finished second to Dantsu Sirius in the Grade III Nikkan Sports Sho Shinzan Kinen at Kyoto Racecourse in January, but was subsequently injured and missed the rest of the season.^[6]

1999: four-year-old season

After an absence of almost a year, Agnes World returned to finish sixth in the Grade III Garnet Stakes at Nakayama on 18 January and then finished second in a minor stakes race over 1200 metres at Kyoto. In April, over the same course and distance, he finished second to Meiner Love in the Grade III Silk Road Stakes. For his next two races he was moved up to the highest class: he finished fifth to Masa Lucky in the Takamatsunomiya Kinen at Chukyo and eighth behind Air Jihad in the Yasuda Kinen at Tokyo Racecourse. The colt returned to winning form when he was dropped in class for two sprint races at Kokura Racecourse. In July he won the Kitakyushu Tankyori Stakes in a record time of 1:06.5 and in the following month he added a win in the Kokura Nikkei Open.^[6]

After his wins at Kokura, Agnes World, accompanied by his stablemate Dojima Muteki, was sent to Europe to be prepared for a run in the Group One Prix de l'Abbaye at Longchamp Racecourse on 3 October. He entered the race without a prep race in Europe and was racing over 1000 metres, a distance he had never previously attempted. The Godolphin colt Bertolini started favourite ahead of Sainte Marine (Prix du Gros Chêne) and Imperial Beauty (World Trophy) with the Japanese duo next in the betting on 6.8/1. The other runners included Keos (Prix de Ris-Orangis, Prix de Seine-et-Oise), Arkadian Hero (Mill Reef Stakes), Black Rock Desert (Prix de Saint-Georges), Mitcham (King's Stand Stakes), Averti (King George Stakes), Sampower Star (Duke of York Stakes) and Yorkies Boy (Palace House Stakes). Agnes World was always among the leaders and went to the front approaching the last 400 metres. He was driven out by Yutaka Take to win by a short neck from Imperial Beauty with Keos a length and half way in third place.^[7]

Agnes World returned to Japan for his last two races of 1999. At Kokura in November he recorded his first major win in Japan for sixteen months when he defeated Masa Lucky by half a length in the Grade II CBC Sho. On his final appearance of the season he contested the Sprinters Stakes in December and finished second, beaten a neck by the five-year-old Black Hawk.^[6]

2000: five-year-old season

On his first run as a five-year-old Agnes World made his second attempt to win the Takamatsunomiya Kinen and finished third, beaten a neck and the same by King Halo and Divine Light.^[6]

In the summer of 2000, the horse was sent to Europe to contest two major sprint races in the United Kingdom. He was again accompanied by Dojima Muteki as well as Air Shakur who was being prepared for a run in the King George VI and Queen Elizabeth Stakes. At Royal Ascot on 20 June, a week after his arrival in Britain, he started a 16/1 outsider in a twenty-three runner field for the King's Stand Stakes and finished second, one and a half lengths behind Nuclear Debate. On 13 July at Newmarket Racecourse, Agnes World started 4/1 favourite for the July Cup over six furlongs. On the eve of the race Masa Matsuda, who had handled the horse's preparation was interviewed by The Guardian and said "at three and four years, he was good at home when he galloped, but when he got to the races he was like a child, because he was very nervous. All the time he was biting me or kicking me. But now he is like an adult. He is more relaxed when he goes racing, and is getting better all the time".^[8] Agnes World's main rivals in the betting were Lincoln Dancer (Sandy Lane Stakes), Primo Valentino (Middle Park Stakes), Lend A Hand (Gran Criterium, Hungerford Stakes, Duke of York Stakes), Monashee Mountain (Tetrarch Stakes) and Pipalong (Palace House Stakes). Yutaka Take tracked the leaders as Primo Valentino made the running before making his challenge in the last quarter mile. Lincoln Dancer took the lead a furlong out, but Agnes World overhauled the leader in the final strides to win by a short head, with Pipalong another short head away in third.^[9] His victory was the first Group One victory in Britain for a horse trained in Japan.^[10] Commenting through an interpreter, Take said "My horse felt good before the race so I felt confident. I always thought he would be good enough. It is a great pleasure for me to win and I am very happy".^[11] The JRA spokesman Yukio Nakayama said "It was 130 years ago that the British people introduced horseracing to Japan. We have imported many, many horses from here, and now we have won a race here".^[12]

Agnes World returned to Japan for the Sprinters' Stakes on 1 October in which he finished strongly to take second, one and a half lengths behind the front-running 257/1 outsider Daitaku Yamato.^[13] In November, the horse was sent to the United States to contest the Breeders' Cup Sprint at Churchill Downs. Racing on dirt for the first time since December 1997 he never looked likely to win and finished eighth of the fourteen runners behind Kona Gold.