Speed figures: Thursday's HRN top 10 + fastest maiden winners
American Women led all performers Thursday with a 134 Horse Racing Nation speed figure at Gulfstream Park in the eighth race. The 4-year-old filly by Constitution captured a six-furlong allowance optional claimer on dirt at 8-1 odds. This marked her third career victory in her 10th start and was her second win in a row for trainer Kevin Attard.
Final Payment earned a 131 HRN speed figure at Gulfstream Park in a six-furlong claiming race on dirt. The 4-year-old gelding by Girvin won at 2-1 odds, recording his second career win from eight starts.
Latch the Hatch completed the top three with a 131 HRN speed figure at Gulfstream Park in a seven-furlong claiming race on dirt. The 4-year-old gelding by Curlin's Honor scored at 9-5 odds, recording his fourth career win from 12 starts.
Thursday's top 10 speed figures
| HRN | Horse | Sire | Age | Race | Distance |
|---|---|---|---|---|---|
| 134 | American Women | Constitution | 4F | GP 8 | 6f dirt |
| 131 | Final Payment | Girvin | 4G | GP 5 | 6f dirt |
| 131 | Latch the Hatch | Curlin's Honor | 4G | GP 9 | 7f dirt |
| 127 | Desert Gate | Omaha Beach | 3C | OP 8 | 1 mile dirt |
| 122 | Bourbon's Fault | Blame | 5G | OP 2 | 6f dirt |
| 120 | Lost and Found | Liam's Map | 4F | TP 8 | 6f synthetic |
| 115 | Social Belle | Laoban | 4F | TP 5 | 6f synthetic |
| 114 | Our Shenanigan | Practical Joke | 4F | TP 3 | 6 1/2f synthetic |
| 112 | Ditched | Broken Vow | 4F | GP 10 | 1 mile turf |
| 112 | Don't Do It Lucy | Girvin | 3F | GP 7 | 6f dirt |
Fastest maiden winners
Don't Do It Lucy posted the day's highest maiden winner figure with a 112 HRN speed figure at Gulfstream Park for trainer Jose D'Angelo. The 3-year-old filly by Girvin won a six-furlong maiden optional claimer on dirt at 5-1 odds in her debut. She is out of Presage, a Jimmy Creed mare who earned $29,000, and her top sibling Watch for the Lute has earned $30,000.
Holly's Holiday impressed with a 103 HRN speed figure at Oaklawn in a 1 1/16-mile maiden special weight on dirt. The 3-year-old filly by Maxfield dominated by 5 1/4 lengths at 6-1 odds in her third career start. She is out of Blast, a Harlan's Holiday mare who earned $102,000, and her top sibling is Grade 1 winner Velocity, who has earned $275,000.
Dare Greatly earned a 103 HRN speed figure at Oaklawn Park in a 1 1/16-mile maiden special weight on dirt. The 3-year-old filly by Chance It won by 5 1/4 lengths at 4-5 odds in her ninth career start. She is out of Accelebrate, a Northern Afleet mare who earned $96,000, and her top sibling Here's Waldo has earned $233,000.
Thursday's top maiden winners
| HRN | Horse | Sire | Age | Race | Distance | Winning Margin |
|---|---|---|---|---|---|---|
| 112 | Don't Do It Lucy | Girvin | 3F | GP 7 | 6f dirt | Nose |
| 103 | Holly's Holiday | Maxfield | 3F | OP 7 | 1 1/16f dirt | 5 1/4 lengths |
| 103 | Dare Greatly | Chance It | 3F | OP 7 | 1 1/16f dirt | 5 1/4 lengths |
| 98 | Royal Retinue | Wootton Bassett | 3F | GP 1 | 1 mile turf | 2 1/4 lengths |
| 92 | Global Heat Wave | Global Campaign | 3G | OP 9 | 1 mile dirt | 6 1/2 lengths |
| 91 | Prophetic Debby | Awtaad | 3F | TP 9 | 1 mile synthetic | nose |
| 90 | Cassadaga | Neolithic | 3F | GP 3 | 6f dirt | neck |
| 89 | Colleens Song | Modernist | 3F | TP 4 | 1 mile synthetic | 2 1/2 lengths |
| 84 | Dame's Rocket | Karakontie | 4F | TP 1 | 6f synthetic | nose |
| 82 | Starship Refund | Maclean's Music | 4F | TP 10 | 6 1/2f synthetic | 1 1/4 lengths |
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.