Speed figures: Thursday's fastest runners, top maidens
In Theory delivered Wednesday's top performance with an impressive 125 Horse Racing Nation speed figure at Delaware Park. The 4-year-old filly by Mendelssohn won a six-furlong optional-claiming allowance on dirt at 2-1 odds. This was her third career victory in her fifth career start.
Electrifying Lady earned a 123 HRN speed figure at Horseshoe Indianapolis, securing victory in a six-furlong dirt maiden special weight. The 3-year-old filly by Practical Joke went off at 4-1 odds. It was her first career win in her sixth lifetime start.
Flat Out Time completed the top three performers with a 122 HRN speed figure at Delaware Park in a six-furlong dirt allowance optional claimer. The 3-year-old filly by Not This Time, who was sent off as the 8-5 favorite, recorded her second career win from just three starts.
Top 10 Wednesday figures
| HRN | Horse | Sire | Age | Race | Distance |
|---|---|---|---|---|---|
| 125 | In Theory | Mendelssohn | 4F | DEL8 | 6f dirt |
| 123 | Electrifying Lady | Practical Joke | 3F | IND5 | 6f dirt |
| 122 | Flat Out Time | Not This Time | 3F | DEL4 | 6f dirt |
| 121 | Wicked Vette | Country House | 3F | IND3 | 6f dirt |
| 117 | Mystic Lake | Mo Town | 4F | DEL6 | 6f dirt |
| 115 | Laura's Charm | Mshawish | 6M | IND4 | 1 1/16 miles dirt |
| 115 | Stars and Stripes | Not This Time | 3C | SAR8 | 1 1/8 miles dirt |
| 114 | Highland Society | Society's Chairman | 7G | WO7 | 6 1/2f synthetic |
| 113 | Miss Authentic | Authentic | 3F | CNL5 | 1 1/16 miles dirt |
| 112 | Indy Magic | Good Magic | 4G | SAR1 | 1 mile dirt |
Maiden winners showcase potential
Miss Authentic recorded the day's highest figure among maiden winners with a 113 HRN speed figure at Colonial Downs. The 3-year-old filly by Authentic captured a 1 1/16-mile dirt maiden special weight as the 1-5 favorite in her seventh career start. She is out of Vertical Vision, a daughter of Pollard's Vision, whose top offspring include Grade 2 winner Vertical Oak, an earner of $773,000.
Annexperience impressed with a 102 HRN speed figure in a one-mile turf maiden special weight at Saratoga. The 3-year-old colt by Instagrand won at 9-5 odds in his fourth career start. His dam Sistas Ready by More Than Ready produced the Grade 2-placed Vote No, who earned $628,000 in his career.
Tactical Trackstar earned a 110 HRN speed figure at Saratoga in his second career start. The 3-year-old colt by Complexity finished a six-furlong dirt maiden claiming race at 3-1 odds. He is out of Tactful Lady by Langfuhr, who also produced So I Sang, an earner of $46,000.
Top maiden winners
| HRN | Horse | Sire | Age | Race | Distance |
|---|---|---|---|---|---|
| 113 | Miss Authentic | Authentic | 3F | CNL5 | 1 1/16 miles dirt |
| 110 | Tactical Trackstar | Complexity | 3C | SAR5 | 6f dirt |
| 102 | Annexperience | Instagrand | 3C | SAR2 | 1 mile turf |
| 94 | Sweet Tone | Tonalist | 4G | CNL7 | 1 mile turf |
| 72 | La Belva | Old Forester | 3F | WO1 | 5f synthetic |
| 68 | Mishka | American Pharoah | 4F | DEL5 | 1 1/8 miles dirt |
| 67 | Sacred Goddess | Kantharos | 2F | SAR6 | 5 1/2f turf |
| 58 | Film Academy | Oscar Performance | 4G | SAR10 | 5 1/2f turf |
| 51 | Spy Wars | Blofeld | 4G | DEL3 | 1 1/8 miles 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 continously 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.