Speed figures: See Saturday's fastest horses
Shea Brennan posted the day's highest Horse Racing Nation speed figure with a 127 at Los Alamitos in the ninth race, the Bertrando Stakes. The 4-year-old colt by Tough Sunday captured a one-mile dirt stakes race at 5-2 odds, recording his fourth career victory in his 11th start.
Unsolved Mystery earned a 126 HRN speed figure at Monmouth Park in a dominant win by 8 3/4 lengths in the eighth race. The 7-year-old horse by Goldencents captured a six-furlong dirt starter optional claimer at 4-5 odds. This marked his 10th career victory in his 27th start.
Piper's Factor completed the top three with a 119 HRN speed figure at Woodbine in the seventh race. The 5-year-old horse by The Factor won a 7 1/2-furlong turf allowance optional claimer at 4-1 odds, earning his fifth career win from 22 starts.
Saturday's top 10 speed figures
| HRN | Horse | Sire | Age/ Sex |
Race | Distance |
|---|---|---|---|---|---|
| 127 | Shea Brennan | Tough Sunday | 4C | LRC 9 | 1 mile dirt |
| 126 | Unsolved Mystery | Goldencents | 7H | MTH 8 | 6f dirt |
| 119 | Piper's Factor | The Factor | 5H | WO 7 | 7 1/2f turf |
| 119 | Keewaydin | Instagrand | 4C | BAQ 1 | 6f turf |
| 119 | Curlins Cruzin | Ride On Curlin | 5G | DEL 4 | 5 1/2f dirt |
| 118 | Tiz Purple | Tiz the Law | 4F | DEL 2 | 6f dirt |
| 117 | Jolly by Golly | Speightster | 6G | LRL 2 | 1 mile dirt |
| 117 | Let's Dance Again | Spun to Run | 4F | LRL 3 | 1 1/16 turf |
| 116 | Clawless Brit | Mshawish | 3F | LRL 4 | 5 1/2f turf |
| 114 | Eclatant | Into Mischief | 4F | CD 9 | 7f dirt |
Fastest maiden winners
Go for Rocket posted the day's highest figure among maiden winners with a 102 HRN speed figure at Churchill Downs in the sixth race. The 3-year-old colt by Candy Ride won a 1 1/16-mile turf maiden claimer at 8-1 odds, recording his first career victory in his sixth start. He is out of Flora Dora, a Grade 1-placed First Dude mare who earned $607,000, and his top sibling Howin is a Grade 2-placed runner who has earned $152,000.
Big Reflections earned a 100 HRN speed figure at Los Alamitos in the second race. The 4-year-old gelding by Mr. Big won a one-mile dirt maiden claimer at even odds in his second career start. He is out of Miss Star Maker, a Pioneerof the Nile mare who earned $119,000, and his top sibling Gemstone Gal has earned $227,000.
Lighten earned a 100 HRN speed figure at Delaware Park in the eighth race. The 3-year-old filly by Speightstown won a six-furlong dirt maiden claimer at 8-1 odds in her fifth career start, picking up her first win.
Saturday's top maiden winners
| HRN | Horse | Sire | Age/ Sex |
Race | Distance |
|---|---|---|---|---|---|
| 102 | Go for Rocket | Candy Ride | 3C | CD 6 | 1 1/16 turf |
| 100 | Big Reflections | Mr. Big | 4G | LRC 2 | 1 mile dirt |
| 100 | Lighten | Speightstown | 3F | DEL 8 | 6f dirt |
| 100 | Tuthilltown | Classic Empire | 3F | BAQ 10 | 6f turf |
| 99 | Dinner Royale | King for a Day | 3G | BAQ 8 | 7f dirt |
| 99 | Switchin' to Glide | Souper Speedy | 4G | WO 1 | 6f syn |
| 98 | Mighty Nora | Global Campaign | 3F | CD 3 | 7 1/2f dirt |
| 97 | Dats Ms. Blame | Blame | 3F | LRC 3 | 6f dirt |
| 95 | Five Dozen Roses | Honest Mischief | 4F | BAQ 4 | 6f turf |
| 94 | Sofocles | McKinzie | 3G | GP 1 | 5f syn |
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.