Mr. C. B.

Mr. C. B.
ミスターシービー
Mr C. B. at the Japanese Derby
SireTosho Boy
GrandsireTesco Boy
DamC.B. Queen
DamsireTopyo
SexStallion
Foaled7 April 1980
Died15 December 2000 (aged 20)
CountryJapan
ColourDark Bay
BreederChigira Bokujo
OwnerMarunuma Onsen Hotel Co., Ltd.
Racing colors
TrainerYasuhisa Matsuyama
Record15: 8-3-1
Earnings¥409,598,100
Major wins
Kyodo Tsushin Hai (1983)
Yayoi Sho (1983)
Tennō Shō (Autumn) (1984)
Japanese Classic Race wins:
Satsuki Sho (1983)
Tokyo Yushun (1983)
Kikuka Sho (1983)
Awards
3rd Japanese Triple Crown Champion (1983)
Japanese Horse of the Year (1983)
Honours
Japan Racing Association Hall of Fame (1986)
Last updated on 24 June 2026

Mr. C. B. (Japanese: ミスターシービー, Hepburn: Misutā Shī Bī; 7 April 1980 – 15 December 2000) was a Japanese Thoroughbred racehorse and stud. In 1983 he won the Japanese Triple Crown, becoming the third horse to do so after St Lite and Shinzan. In recognition of this feat and his other strong showings, Mr. C. B. was named Japanese Horse of the Year for 1983 by the JRA, and would later be inducted into the Japan Racing Association Hall of Fame in 1986. He was also the first Triple Crown winner to be ridden by the same jockey, Masato Yoshinaga, from his debut until his retirement. The initials "C. B." stand for Chigira Bokujō (lit. 'Chigira Farm'), his birthplace.[1]

Mr. C. B. died of laminitis on 15 December 2000.

Background

Mr. C. B. was a bay horse bred in Japan by Chigira Bokujo. He was sired by Tosho Boy, Satsuki Sho, Arima Kinen, Takarazuka Kinen and Takamatsunomiya Kinen winner.[2] Tosho Boy was nicknamed "Pegasus" due to his racing performance. Tosho Boy is also an ancestor of Kikuka Sho winner Matikanefukukitaru[3] and Singapore Airlines International Cup winner Cosmo Bulk.[4] Mr C. B.'s mother, C. B. Queen, was also a successful racehorse who won races such as the Mainichi Okan and the Keio Hai Spring Cup.[5] C. B. Queen and Tosho Boy both debuted in the same maiden race.

Mr C. B. was not given a unique name at birth and was known as "C. B. Queen 1" until a unique name was given.[6] Many of Tosho Boy's offspring had an unstable rear-oriented centre of gravity, however Mr C. B. had a solid waist and was known as "a horse that inherited only the good traits of Tosho Boy."[7]

After being weaned at Okamoto Farm, Mr C. B. was moved to Chigira Farm in Gunma Prefecture in March 1981. This farm was owned by C. B. Queen's owner and her breeder, and was where Mr. C. B. underwent training.[8]

When he reached the age of 3, he was given the racing name "Mr. C. B.," and entered Matsuyama Yasuhisa's stable at the Miho Training Center in Ibaraki Prefecture. Initially, Mr C. B. was scheduled to be under the care of Matsuyama Yoshisaburo, who also looked after C. B. Queen, but it was changed to his son Yasuhisa.[8]

Racing statistics

Mr. C. B. recorded a total of 8 wins for 15 starts, including one graded win, the G1 Autumn Tenno Sho. His classic triple crown victories were part of the "eight major races", the classification for the most prestigious races in Japan before the introduction of the grading system in 1984. Retroactively applying the grades his races received in 1984, Mr. C. B. would hold the equivalent of 6 graded wins, including 4 Grade or Group 1 victories.

All information is publicly available on JBIS and Netkeiba.[9][10]

Date Track Name Grade Distance Finished Time Jockey Winner (2nd Place)
1982 - two-year-old season
6 November 1982 Tokyo 3 yo Debut[a] 1600m 1st 1:38.5 Masato Yoshinaga (Hirataka Eiko)
4 December 1982 Nakayama Kuromatsu Sho 1600m 1st 1:36.3 Masato Yoshinaga (Yu Fubuki)
25 December 1982 Nakayama Hiiragi Sho 1800m 2nd 1:50.4 Masato Yoshinaga Umeno Shin O
1983 - three-year-old season
13 February 1983 Tokyo Kyodo Tsushin Hai 1800m 1st 1:49.5 Masato Yoshinaga (Umeno Shin O)
6 March 1983 Nakayama Hochi Hai Yayoi Sho 1800m 1st 1:50.2 Masato Yoshinaga (Speed Tri)
17 April 1983 Nakayama Satsuki Sho 八[b] 2000m 1st 2:08.3 Masato Yoshinaga (Mejiro Mont Cenis)
29 May 1983 Tokyo Tokyo Yushun (Japanese Derby) 八 2400m 1st 2:29.5 Masato Yoshinaga (Mejiro Mont Cenis)
23 October 1983 Kyoto Kyoto Shimbun Hai 2000m 4th 2:03.2 Masato Yoshinaga Katsuragi Ace
13 November 1983 Kyoto Kikuka Sho 八 3000m 1st 3:08.1 Masato Yoshinaga (Bingo Kanta)
1984 - four-year-old season
7 October 1984 Tokyo Mainichi Okan G2 1800m 2nd 1:47.5 Masato Yoshinaga Katsuragi Ace
28 October 1984 Tokyo Tenno Sho (Autumn) G1 2000m 1st 1:59.3 Masato Yoshinaga (Tudenham King)
25 November 1984 Tokyo Japan Cup G1 2400m 10th 2:28.2 Masato Yoshinaga Katsuragi Ace
23 December 1984 Nakayama Arima Kinen G1 2500m 3rd 2:33.3 Masato Yoshinaga Symboli Rudolf
1985 - five-year-old season
31 March 1985 Hanshin Sankei Osaka Hai G2 2000m 2nd 2:01.4 Masato Yoshinaga State Jaguar
29 April 1985 Kyoto Tenno Sho (Spring) G1 3200m 5th 3:22.3 Masato Yoshinaga Symboli Rudolf

Stud record

Notable progeny

c = colt, f = filly, g = gelding

Foaled Name Sex Major Wins
1987 Yamanin Global[11] c Daily Hai Nisai Stakes, Meguro Kinen, Copa Republica Argentina
1987 Meisho Vitoria[12] g Stayers Stakes
1987 Sweet Mithuna[13] f Queen Cup

An anthropomorphized version of Mr. C. B. appears in Umamusume: Pretty Derby, voiced by Yurina Amami.[14] She is a free-spirited Umamusume that was born to a trainer and trainee couple whose eloping resulted in a scandal, reflecting her real-world counterpart's foaling and controversy surrounding it. She is a close friend and rival of Symboli Rudolf and Katsuragi Ace, and lives off-campus like Maruzensky.

Pedigree

Pedigree of Mr. C. B. (JPN), bay stallion 1980[15]
Sire
Tosho Boy		 Tesco Boy Princely Gift Nasrullah
Blue Gem
Suncourt Hyperion
Inquisition
Social Butterfly Your Host Alibhai
Boudoir
Wisteria Easton
Blue Cyprus
Dam
C.B. Queen		 Topyo Fine Top Fine Art
Toupie
Deliriosa Delirium
La Fougueuse
Meido Admiral Byrd Nearco
Woodlark
Meiwa Gay Time
Chill Wind

Notes

  1. ↑ The age counting for horses in Japan was based on the East Asian age reckoning until it was changed to international standards in 2001, with foals starting at the age of 1.
  2. ↑ Denotes a race belonging to the "Eight Great Races" (Hachidaikyousou), considered the most prestigious races in Japan, proceeding the introduction of the graded system in 1984.

References

  1. ↑ "サラブレッドがつなぐ夢（サラブレッドの一生紹介）". JRA70周年特設サイト｜JRA (in Japanese). Archived from the original on 30 May 2026. Retrieved 30 May 2026.
  2. ↑ "Tosho Boy". JBIS. Archived from the original on 12 September 2025. Retrieved 24 September 2025.
  3. ↑ "Matikanefukukitaru". JBIS. Archived from the original on 11 September 2025. Retrieved 24 September 2025.
  4. ↑ "Cosmo Bulk". JBIS. Retrieved 24 September 2025.
  5. ↑ "C. B. Queen". JBIS. Archived from the original on 14 June 2025. Retrieved 24 September 2025.
  6. ↑ Kimura 1994, p. 70.
  7. ↑ Kimura 1994, pp. 70–71.
  8. 1 2 Kimura 1994, p. 71.
  9. ↑ "Mr. C. B. | Horse Profile, Pedigree, Form, Race Record". netkeiba. Retrieved 14 May 2026.
  10. ↑ "Mr. C.B.(JPN) | JBIS-Search". www.jbis.jp. Retrieved 14 May 2026.
  11. ↑ "Yamanin Global | Horse Profile, Pedigree, Form, Race Record". netkeiba. Retrieved 4 August 2025.
  12. ↑ "Meisho Vitoria Race Record and Form | Horse Profile". netkeiba. Archived from the original on 27 December 2025. Retrieved 4 August 2025.
  13. ↑ "Sweet Mithuna(JPN) | JBIS-Search". www.jbis.jp. Archived from the original on 27 December 2025. Retrieved 6 August 2025.
  14. ↑ "ミスターシービー｜ウマ娘 プリティーダービー 公式ポータルサイト｜Cygames". ウマ娘 プリティーダービー 公式ポータルサイト (in Japanese). Archived from the original on 10 December 2025. Retrieved 1 December 2025.
  15. ↑ "Mr. C. B. pedigree". equineline.com.

Bibliography

  • Kimura, Koji (1994). 馬の王、騎手の詩 [The King of Horses, the Poem of the Jockey] (in Japanese). Takarashimasha. ISBN 978-4-7966-0872-5.
  • Ichimaru, Hiroshi (1994). サラブレッド怪物伝説―スーパーホース激走カタログ101 [The Legend of the Thoroughbred Monster - Super Horse Racing Catalog 101]. Kosaido Bunko - Human Select (in Japanese). Kosaido Publishing. ISBN 978-4-331-65202-2.
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