Speed figures: Sovereignty earns top mark in Whitney win
Sovereignty led all performers with a 136 Horse Racing Nation speed figure at Saratoga in the Whitney S. The 4-year-old colt by Into Mischief captured the 1 1/8-mile dirt stakes race at 2-1 odds, winning by 4 3/4 lengths. This marked his seventh career victory in his 12th start.
War Officer earned a 131 HRN speed figure at Colonial Downs in a 1 1/4-mile turf allowance. The 6-year-old gelding by War Front won in dominant fashion by 7 1/2 lengths at 2-1 odds, recording his fourth career win from 22 starts. His top sibling Full Count Felicia is a Grade 1 winner who has earned $812,000.
Glacius completed the top three with a 127 HRN speed figure at Saratoga in the Saratoga Derby S. Presented by Qatar Racing. The 3-year-old colt by Too Darn Hot captured the 1 3/16-mile turf stakes at 9-1 odds, earning his second career win from six starts.
Saturday's top 10 speed figures
| HRN | Horse | Sire | Age/ Sex |
Race | Distance |
|---|---|---|---|---|---|
| 136 | Sovereignty | Into Mischief | 4C | SAR 12 | 1 1/8 dirt |
| 131 | War Officer | War Front | 6G | CNL 6 | 1 1/4 turf |
| 127 | Glacius | Too Darn Hot | 3C | SAR 11 | 1 3/16 turf |
| 124 | Explora | Blame | 3F | SAR 9 | 7f dirt |
| 121 | San Siro | Classic Empire | 5G | SAR 3 | 1 1/8 dirt |
| 121 | Hannah Buckle | Bated Breath | 5M | DMR 2 | 1 mile turf |
| 121 | Lamirada | Army Mule | 2F | WO 5 | 6f synthetic |
| 120 | Classic Move | Classic Empire | 3F | WO 6 | 6f synthetic |
| 119 | Big City | City of Light | 5H | ELP 3 | 6f dirt |
| 118 | Matt At Five | Tamarando | 3G | DMR 9 | 6f dirt |
Fastest maiden winners
Lamirada posted the day's highest figure among maiden winners with a 121 HRN speed figure at Woodbine in a six-furlong synthetic maiden special weight, winning in dominant fashion by 11 3/4 lengths. The 2-year-old filly by Army Mule went off at 8-5 odds in her debut. She is out of Sister Nova, a Verrazano mare who earned $78,000, and her top sibling Notorious Gangster by Classic Empire has earned $370,000.
Gaudreau earned a 116 HRN speed figure at Saratoga in a 6 1/2-furlong dirt maiden special weight. The 2-year-old colt by Nyquist won at 2-1 odds in his debut. He is out of Free Cover, a Congrats mare who earned $180,000, and his top sibling Undercover Girl has earned $79,000.
Vaporetti rounded out the top three maiden winners with a 117 HRN speed figure at Ellis Park in a 1 1/16-mile turf maiden special weight. The 3-year-old colt by Not This Time won at 7-1 odds in his third career start. He is out of Lido, a Street Cry mare who earned $211,000 and was Grade 3 placed.
Saturday's top maiden winners
| HRN | Horse | Sire | Age/ Sex |
Race | Distance |
|---|---|---|---|---|---|
| 121 | Lamirada | Army Mule | 2F | WO 5 | 6f synthetic |
| 117 | Vaporetti | Not This Time | 3C | ELP 9 | 1 1/16 turf |
| 116 | Gaudreau | Nyquist | 2C | SAR 1 | 6 1/2f dirt |
| 113 | Daddy's the Boss | Frac Daddy | 3F | WO 11 | 6 1/2f synthetic |
| 113 | Summer Starlet | City of Light | 2F | SAR 6 | 6 1/2f dirt |
| 112 | Non Domicile | Promises Fulfilled | 4G | DMR 10 | 1 mile turf |
| 111 | Caribbean Life | Life Is Good | 2C | ELP 5 | 7f dirt |
| 110 | Path To Power | Time Test | 3G | DMR 6 | 1 mile turf |
| 109 | Fleury | Practical Joke | 3F | WO 8 | 6f synthetic |
| 108 | Diamond Knife | Violence | 3G | CNL 3 | 6f dirt |
About HRN speed figures
HRN speed figures are AI-generated using HRN's proprietary machine-learning algorithms. Although they involve less human input than other speed figures, we see that as a plus as human adjustments often knock down surprisingly good performances to match expectations. HRN speed figures were launched in December 2024, and our expectation is also that the AI-generated speed figures will continuously get better over time.
The HRN speed figure scale goes from 1 to 160. Part of the reason for this higher scale is this helps us avoid assigning a speed figure of zero. For some products, in weaker races, half the field or more may get a speed figure of zero, which leads to inaccuracy and defeats the purpose of speed figures.
Because the HRN speed figures are based on machine learning, as we improve our models we can compute the numbers historically.
Using the top last-race speed figure as a benchmark, here are stats from 2021 to 2024 for HRN and other speed-figure providers:
Top HRN figure 26.2% winners
Top Beyer figure 28.1% winners
Top TimeformUS figure 28.4% winners
Although all HRN speed figures are published on individual horse profile pages on a weekly basis, the daily reports are focused on the top and medium-tier tracks, which represent the majority of top speed figures.
Note: For the fastest maiden winners mentioned, all dam and sibling earnings are based on North American starts only.