Details
| Name / Japanese | Grand Prix Boss / グランプリボス |
| Birth Year | 2008 |
| Sex | male |
| Earnings | 513,291,000 yen |
| Races-Win / G1-Win | 28-6 / 15-2 |
| Sire | Sakura Bakushin O |
| Dam (Sire) | Rosy Mist (Sunday Silence) |
| Other site link | JBIS / Umanity / en.netkeiba |
| Awards | JRA Award for Best Two-Year-Old Colt (2010) |
All G1 races + grade-races he won
| Y D/M |
Track | Race | No. | Pl. |  |
| 2010 13/11 |
Tokyo T1400 |
Keio Hai Nisai Stakes (G2) | 6 | 1 | G |
| 2010 19/12 |
Nakayama T1600 |
Asahi Hai Futurity Stakes (G1) | 11 | 1 | ◆ |
| 2011 08/05 |
Tokyo T1600 |
NHK Mile Cup (G1) | 13 | 1 | ◆ |
| 2011 14/06 |
Ascot T1603 (7F 213Y) |
St. James’s Palace Stakes (G1) | 5 | 8 | G |
| 2011 20/11 |
Kyoto T1600 |
Mile Championship (G1) | 11 | 13 | ◆ |
| 2012 19/02 |
Tokyo D1600 |
February Stakes (G1) | 13 | 12 | ◆ |
| 2012 03/06 |
Tokyo T1600 |
Yasuda Kinen (G1) | 3 | 2 | ◆ |
| 2012 27/10 |
Kyoto T1400 |
Mainichi Hoso Sho Swan Stakes (G2) | 15 | 1 | G |
| 2012 18/11 |
Kyoto T1600 |
Mile Championship (G1) | 7 | 2 | ◆ |
| 2012 09/12 |
Sha Tin T1600 |
Hong Kong Mile (G1) | 6 | 12 | G |
| 2013 21/04 |
Kyoto T1600 |
Yomiuri Milers Cup (G2) | 17 | 1 | G |
| 2013 02/06 |
Tokyo T1600 |
Yasuda Kinen (G1) | 7 | 10 | ◆ |
| 2013 29/09 |
Nakayama T1200 |
Sprinters Stakes (G1) | 1 | 7 | ◆ |
| 2013 17/11 |
Kyoto T1600 |
Mile Championship (G1) | 16 | 9 | ◆ |
| 2014 08/06 |
Tokyo T1600 |
Yasuda Kinen (G1) | 12 | 2 | ◆ |
| 2014 05/10 |
Niigata T1200 |
Sprinters Stakes (G1) | 14 | 4 | ◆ |
| 2014 23/11 |
Kyoto T1600 |
Mile Championship (G1) | 14 | 6 | ◆ |
| 2014 14/12 |
Sha Tin T1600 |
Hong Kong Mile (G1) | 4 | 3 | G |
- In the Keio Hai Nisai Stakes, he was 7th favorite.
Orfevre was 1st favorite and Real Impact was 2nd favorite.
Grand Prix Boss took the lead 200m before the finish-line.
Real Impact couldn’t catch up with Grand Prix Boss and finished 2nd.
Orfevre was 10th.
It was his first grade-race win. - In the Asahi Hai Futurity Stakes, he was 5th favorite.
He took the lead in the home stretch and finished in 1st place.
His cross-running was a subject of deliberation, but the deliberation did not change his place.
It was his first G1 win.
Real Impact was 2nd again. - He won the JRA Award for Best Two-Year-Old Colt (2010).
- In the NHK Mile Cup, he was 1st favorite.
He took the lead 100m before the finish-line.
He won by 1+1/2 lengths. - He went to Britain to run in the St. James’s Palace Stakes, and finished 8th.
Frankel won the race. - After that, he won two G2 races and his best finish in a G1 race was 2nd.
- He was expected to be the successor stallion to Sakura Bakushin O.
But when he became a stallion, his owners and the largest Shadai group allegedly had a falling out.
He was stallioned at Arrow Stud, not at Shadai Stallion Station.
Because of that, he has no successful crops.
Especially in turf racing, his crops have rarely won.