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Grass Wonder

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Grass Wonder

Grass Wonder (Japanese: グラスワンダー, 18 February 1995 – 8 August 2025) was an American-bred Japanese-trained Thoroughbred racehorse and sire. In a racing career which lasted from 1997 until 2000 he won nine of his fifteen races including four Grade I races. He was the leading juvenile colt in Japan in 1997 when he was unbeaten in four races, culminating in a victory in the Asahi Hai Sansai Stakes. He missed most of his second season with injury problems but returned in autumn to win the Arima Kinen. He reached his peak as a four-year-old when he won the Takarazuka Kinen and a second Arima Kinen. He failed to win in three races in 2000 and was retired to stud. He had some success as a breeding stallion.

Infobox

Sire
Silver Hawk
Grandsire
Roberto
Dam
Ameriflora
Damsire
Danzig
Sex
Stallion
Foaled
(1995-02-18)18 February 1995
Died
8 August 2025(2025-08-08) (aged 30)
Country
United States
Colour
Chestnut
Breeder
Phillips Racing Partnership & John Phillips
Owner
Hanzawa Co., Ltd.
Trainer
Mitsuhiro Ogata
Record
15: 9-1-0
Earnings
¥691,646,000

Tables

· Racing Form
1997 – two-year-old season
1997 – two-year-old season
Date
1997 – two-year-old season
Sep 13
Sep 13
Date
Sep 13
Track
Nakayama
Race
3YO debut
Distance(Condition)
1800m（Firm）
Entry
10
HN
9
Odds(Favored)
1.5（1）
Finish
1st
Time
1:52.4
Margins
−0.5
Jockey
Hitoshi Matoba
Winner(Runner-up)
(Bildschon)
Oct 12
Oct 12
Date
Oct 12
Track
Tokyo
Race
Ivy Stakes
Grade
OP
Distance(Condition)
1400m（Firm）
Entry
9
HN
8
Odds(Favored)
1.4（1）
Finish
1st
Time
1:21.9
Margins
−0.8
Jockey
Hitoshi Matoba
Winner(Runner-up)
(Machikane Sanshiro)
Nov 8
Nov 8
Date
Nov 8
Track
Tokyo
Race
Keisei Hai Sansai Stakes
Grade
2
Distance(Condition)
1400m（Firm）
Entry
9
HN
2
Odds(Favored)
1.1（1）
Finish
1st
Time
1:21.9
Margins
−1.0
Jockey
Hitoshi Matoba
Winner(Runner-up)
(Machikane Sanshiro)
Dec 7
Dec 7
Date
Dec 7
Track
Nakayama
Race
Asahi Hai Sansai Stakes
Grade
1
Distance(Condition)
1600m（Firm）
Entry
15
HN
11
Odds(Favored)
1.3（1）
Finish
1st
Time
R1:33.6
Margins
−0.4
Jockey
Hitoshi Matoba
Winner(Runner-up)
(Meiner Love)
1998 – three-year-old season
1998 – three-year-old season
Date
1998 – three-year-old season
Oct 11
Oct 11
Date
Oct 11
Track
Tokyo
Race
Mainichi Okan
Grade
2
Distance(Condition)
1800m（Firm）
Entry
9
HN
6
Odds(Favored)
3.7（2）
Finish
5th
Time
1:46.4
Margins
1.5
Jockey
Hitoshi Matoba
Winner(Runner-up)
Silence Suzuka
Nov 7
Nov 7
Date
Nov 7
Track
Tokyo
Race
Copa Republica Argentina
Grade
2
Distance(Condition)
2500m（Firm）
Entry
18
HN
13
Odds(Favored)
3.0（1）
Finish
6th
Time
2:33.5
Margins
0.6
Jockey
Hitoshi Matoba
Winner(Runner-up)
Yusei Top Run
Dec 27
Dec 27
Date
Dec 27
Track
Nakayama
Race
Arima Kinen
Grade
1
Distance(Condition)
2500m（Firm）
Entry
16
HN
2
Odds(Favored)
14.5（4）
Finish
1st
Time
2:32.1
Margins
–0.1
Jockey
Hitoshi Matoba
Winner(Runner-up)
(Mejiro Bright)
1999 – four-year-old season
1999 – four-year-old season
Date
1999 – four-year-old season
May 15
May 15
Date
May 15
Track
Tokyo
Race
Keio Hai Spring Cup
Grade
2
Distance(Condition)
1400m（Firm）
Entry
18
HN
5
Odds(Favored)
2.1（1）
Finish
1st
Time
1:20.5
Margins
–0.1
Jockey
Hitoshi Matoba
Winner(Runner-up)
(Air Jihad)
Jun 13
Jun 13
Date
Jun 13
Track
Tokyo
Race
Yasuda Kinen
Grade
1
Distance(Condition)
1600m（Firm）
Entry
14
HN
7
Odds(Favored)
1.3（1）
Finish
2nd
Time
1:33.3
Margins
0.0
Jockey
Hitoshi Matoba
Winner(Runner-up)
Air Jihad
Jul 11
Jul 11
Date
Jul 11
Track
Hanshin
Race
Takarazuka Kinen
Grade
1
Distance(Condition)
2200m（Firm）
Entry
12
HN
5
Odds(Favored)
2.8（2）
Finish
1st
Time
2:12.1
Margins
–0.5
Jockey
Hitoshi Matoba
Winner(Runner-up)
(Special Week)
Oct 10
Oct 10
Date
Oct 10
Track
Tokyo
Race
Mainichi Okan
Grade
2
Distance(Condition)
1800m（Firm）
Entry
10
HN
8
Odds(Favored)
1.2（1）
Finish
1st
Time
1:45.8
Margins
0.0
Jockey
Hitoshi Matoba
Winner(Runner-up)
(Meisho Odo)
Dec 26
Dec 26
Date
Dec 26
Track
Nakayama
Race
Arima Kinen
Grade
1
Distance(Condition)
2500m（Firm）
Entry
14
HN
7
Odds(Favored)
2.8（1）
Finish
1st
Time
2:37.2
Margins
0.0
Jockey
Hitoshi Matoba
Winner(Runner-up)
(Special Week)
2000 – five-year-old season
2000 – five-year-old season
Date
2000 – five-year-old season
Mar 26
Mar 26
Date
Mar 26
Track
Nakayama
Race
Nikkei Sho
Grade
2
Distance(Condition)
2500m（Firm）
Entry
10
HN
7
Odds(Favored)
1.3（1）
Finish
6th
Time
2:36.3
Margins
0.9
Jockey
Hitoshi Matoba
Winner(Runner-up)
Leo Ryuho
May 14
May 14
Date
May 14
Track
Tokyo
Race
Keio Hai Spring Cup
Grade
2
Distance(Condition)
1400m（Firm）
Entry
18
HN
8
Odds(Favored)
2.4（1）
Finish
9th
Time
1:21.6
Margins
0.6
Jockey
Hitoshi Matoba
Winner(Runner-up)
Stinger
Jun 25
Jun 25
Date
Jun 25
Track
Hanshin
Race
Takarazuka Kinen
Grade
1
Distance(Condition)
2200m（Firm）
Entry
11
HN
11
Odds(Favored)
2.8（2）
Finish
6th
Time
2:14.7
Margins
0.9
Jockey
Masayoshi Ebina
Winner(Runner-up)
T M Opera O
Date
Track
Race
Grade
Distance(Condition)
Entry
HN
Odds(Favored)
Finish
Time
Margins
Jockey
Winner(Runner-up)
1997 – two-year-old season
Sep 13
Nakayama
3YO debut
1800m（Firm）
10
9
1.5（1）
1st
1:52.4
−0.5
Hitoshi Matoba
(Bildschon)
Oct 12
Tokyo
Ivy Stakes
OP
1400m（Firm）
9
8
1.4（1）
1st
1:21.9
−0.8
Hitoshi Matoba
(Machikane Sanshiro)
Nov 8
Tokyo
Keisei Hai Sansai Stakes
2
1400m（Firm）
9
2
1.1（1）
1st
1:21.9
−1.0
Hitoshi Matoba
(Machikane Sanshiro)
Dec 7
Nakayama
Asahi Hai Sansai Stakes
1
1600m（Firm）
15
11
1.3（1）
1st
R1:33.6
−0.4
Hitoshi Matoba
(Meiner Love)
1998 – three-year-old season
Oct 11
Tokyo
Mainichi Okan
2
1800m（Firm）
9
6
3.7（2）
5th
1:46.4
1.5
Hitoshi Matoba
Silence Suzuka
Nov 7
Tokyo
Copa Republica Argentina
2
2500m（Firm）
18
13
3.0（1）
6th
2:33.5
0.6
Hitoshi Matoba
Yusei Top Run
Dec 27
Nakayama
Arima Kinen
1
2500m（Firm）
16
2
14.5（4）
1st
2:32.1
–0.1
Hitoshi Matoba
(Mejiro Bright)
1999 – four-year-old season
May 15
Tokyo
Keio Hai Spring Cup
2
1400m（Firm）
18
5
2.1（1）
1st
1:20.5
–0.1
Hitoshi Matoba
(Air Jihad)
Jun 13
Tokyo
Yasuda Kinen
1
1600m（Firm）
14
7
1.3（1）
2nd
1:33.3
0.0
Hitoshi Matoba
Air Jihad
Jul 11
Hanshin
Takarazuka Kinen
1
2200m（Firm）
12
5
2.8（2）
1st
2:12.1
–0.5
Hitoshi Matoba
(Special Week)
Oct 10
Tokyo
Mainichi Okan
2
1800m（Firm）
10
8
1.2（1）
1st
1:45.8
0.0
Hitoshi Matoba
(Meisho Odo)
Dec 26
Nakayama
Arima Kinen
1
2500m（Firm）
14
7
2.8（1）
1st
2:37.2
0.0
Hitoshi Matoba
(Special Week)
2000 – five-year-old season
Mar 26
Nakayama
Nikkei Sho
2
2500m（Firm）
10
7
1.3（1）
6th
2:36.3
0.9
Hitoshi Matoba
Leo Ryuho
May 14
Tokyo
Keio Hai Spring Cup
2
1400m（Firm）
18
8
2.4（1）
9th
1:21.6
0.6
Hitoshi Matoba
Stinger
Jun 25
Hanshin
Takarazuka Kinen
1
2200m（Firm）
11
11
2.8（2）
6th
2:14.7
0.9
Masayoshi Ebina
T M Opera O
Pedigree of Grass Wonder (USA), chestnut stallion, 1995[1] · Pedigree
Nothirdchance
Nothirdchance
SireSilver Hawk (USA)1979
Nothirdchance
Bramalea
Bramalea
SireSilver Hawk (USA)1979
Bramalea
Roberto (USA)1969
Nashua
Rarelea
Rarelea
SireSilver Hawk (USA)1979
Rarelea
Gris Vitesse (USA)1966
Gris Vitesse (USA)1966
SireSilver Hawk (USA)1979
Gris Vitesse (USA)1966
Roberto (USA)1969
Amerigo
Hail To Reason
Nearco
Sanlinea
Sanlinea
SireSilver Hawk (USA)1979
Sanlinea
Matchiche
Matchiche
SireSilver Hawk (USA)1979
Matchiche
Roberto (USA)1969
Mat de Cocagne
Chimere Fabuleuse
Chimere Fabuleuse
SireSilver Hawk (USA)1979
Chimere Fabuleuse
DamAmeriflora (USA)1989
DamAmeriflora (USA)1989
SireSilver Hawk (USA)1979
DamAmeriflora (USA)1989
Roberto (USA)1969
Danzig (USA)1977
Hail To Reason
Northern Dancer
Turn-To
Nearctic
Natalma
Natalma
SireSilver Hawk (USA)1979
Natalma
Pas de Nom
Pas de Nom
SireSilver Hawk (USA)1979
Pas de Nom
Roberto (USA)1969
Admiral's Voyage
Petitioner
Petitioner
SireSilver Hawk (USA)1979
Petitioner
Graceful Touch (USA)1978
Graceful Touch (USA)1978
SireSilver Hawk (USA)1979
Graceful Touch (USA)1978
Roberto (USA)1969
His Majesty
Hail To Reason
Ribot
Flower Bowl
Flower Bowl
SireSilver Hawk (USA)1979
Flower Bowl
Pi Phi Girl
Pi Phi Girl
SireSilver Hawk (USA)1979
Pi Phi Girl
Roberto (USA)1969
Raise a Native
Soaring (Family 12-c)
Soaring (Family 12-c)
SireSilver Hawk (USA)1979
Soaring (Family 12-c)
SireSilver Hawk (USA)1979
Roberto (USA)1969
Hail To Reason
Turn-To
Nothirdchance
Bramalea
Nashua
Rarelea
Gris Vitesse (USA)1966
Amerigo
Nearco
Sanlinea
Matchiche
Mat de Cocagne
Chimere Fabuleuse
DamAmeriflora (USA)1989
Danzig (USA)1977
Northern Dancer
Nearctic
Natalma
Pas de Nom
Admiral's Voyage
Petitioner
Graceful Touch (USA)1978
His Majesty
Ribot
Flower Bowl
Pi Phi Girl
Raise a Native
Soaring (Family 12-c)

References

  1. Equineline
    https://www.equineline.com/Free-5X-Pedigree.cfm?page_state=ORDER_AND_CONFIRM&reference_number=4004827&registry=T&horse_name=Grass%20Wonder&dam_name=Ameriflora&foaling_year=1995&nicking_stats_indicator=Y
  2. Japanese Horse Racing Association
    http://www.jrha.or.jp/stallion_e/horse/?name=Grass_Wonder
  3. Darby Dan Farm
    http://www.darbydan.com/history.html
  4. "Silver Hawk – Stud Record"
    https://www.racingpost.com/profile/horse/302273/silver-hawk
  5. Equineline
    https://www.equineline.com/Free-5X-Pedigree.cfm?page_state=ORDER_AND_CONFIRM&reference_number=1217761&registry=T&horse_name=Ameriflora&dam_name=Graceful%20Touch&foaling_year=1989&nicking_stats_indicator=Y
  6. Thoroughbred Bloodlines
    https://web.archive.org/web/20160303225019/http://www.bloodlines.net/TB/Families/Family12c.htm
  7. Grass Wonder auction history
    http://www.equineline.com/Free-Auction-Results.cfm?upsellReferenceNumber=&upsellHorseName=&upsellBreedType=&upsellHorseType=&upsellYOB=&lookupAuctionResults=true&tempHorseType=&tempSale=ALL&tempYear=ALL&search_type=HORSE&reference_number=4004827&horse_name=Fateful&horse_type=ALL&year=ALL&sale=ALL&consignor_id=&consignor_name=&buyer_id=&buyer_name=&price_range_low=&price_range_high=&availableConsignors=&availableBuyers=&fromFree5CrossPedigree=Y
  8. Sports Nippon
    https://web.archive.org/web/20250808161451/https://www.sponichi.co.jp/gamble/news/2025/08/08/kiji/20250808s00004048289000c.html?page=1
  9. Thoroughbred Daily News
    https://www.thoroughbreddailynews.com/champion-grass-wonder-the-grandsire-of-maurice-dies-at-30/
  10. Japan Bloodhorse Breeders' Association
    http://www.jbis.jp/horse/0000299089/record/
  11. Racing Post
    https://www.racingpost.com/results/514/nakayama/1997-12-07/246920
  12. Yahoo Sports
    https://sports.yahoo.com/article/2-time-arima-kinen-champion-194253052.html
  13. netkeiba
    https://en.netkeiba.com/db/race/199805040211/
  14. Racing Post
    https://www.racingpost.com/results/514/nakayama/1998-12-27/262042
  15. "Keio Hai Spring Cup result"
    https://www.racingpost.com/results/315/tokyo/1999-05-15/267924
  16. "Takarazuka Kinen result 1999"
    https://www.racingpost.com/results/491/hanshin/1999-07-11/270368
  17. "Arima Kinen result 1999"
    https://www.racingpost.com/results/514/nakayama/1999-12-26/276172
  18. "Takarazuka Kinen result 2000"
    https://www.racingpost.com/results/491/hanshin/2000-06-25/284151
  19. www.jbis.jp
    https://www.jbis.jp/horse/0000299089/record/
  20. netkeiba
    https://en.netkeiba.com/db/horse/result/1995108676/
  21. "Grass Wonder – Stud Record"
    https://www.racingpost.com/profile/horse/479759/grass-wonder
  22. Japan Bloodhorse Breeders' Association
    http://www.jbis.jp/horse/0000761087/record/
  23. Japan Bloodhorse Breeders' Association
    http://www.jbis.jp/horse/0000801447/record/
  24. The Blood-Horse
    http://www.bloodhorse.com/horse-racing/articles/63749/earnestly-gains-bc-turf-slot-with-japan-win
  25. Japan Bloodhorse Breeders' Association
    http://www.jbis.jp/horse/0000992914/record/
  26. United Press International
    https://archive.today/20250808164406/https://www.upi.com/Entertainment_News/2025/08/08/japan-uma-musume-pretty-derby-grass-wonder-death/9741754659578/
  27. Dexerto
    https://www.dexerto.com/gaming/legendary-racehorse-umamusume-icon-grass-wonder-dies-at-30-3235791/
  28. ウマ娘 プリティーダービー 公式ポータルサイト
    https://umamusume.jp/character/grasswonder
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