Fastest horses: Promising Brown trainee leads Thursday top 10
Time to Win posted Thursday's highest Horse Racing Nation speed figure with a 136 at Aqueduct. The 3-year-old Not This Time ridgling, trained by Chad Brown, won a maiden special weight dirt mile at 1-2 odds. He tracked the early pace and took command in the lane, drawing off to win by 5 1/2 lengths. He had hit the board in all three of his previous starts, and finally got off the mark in his fourth.
Guile earned a 124 HRN speed figure at Fair Grounds on Thursday in a six-furlong dirt sprint conditioned $12,500 claimers. The 4-year-old gelding, trained by Alexis Claire, tracked the early pace, dueled briefly in upper stretch, and drew off in the last furlong to win by 6 3/4 lengths at 3-1 odds. It was his third win in 15 lifetime starts and his second in a row.
Mo for Us completed the top three with a 122 HRN speed figure at Fair Grounds. The Steve Asmussen trainee, a 4-year-old filly by Mo Tom, ran to her 1-5 odds in the six-furlong allowance-optional claiming sprint for Louisiana-breds. She stalked the early pace and took command in the lane, winning by 7 1/4 lengths. It was her second consecutive victory and her fourth in 14 career starts.
Thursday's top 10 speed figures
| HRN | Horse | Sire | Age | Race | Distance |
|---|---|---|---|---|---|
| 136 | Time to Win | Not This Time | 3R | AQU 2 | 1 mile dirt |
| 124 | Guile | Blame | 4G | FG 5 | 6f dirt |
| 122 | Mo for Us | Mo Tom | 4F | FG 3 | 6f dirt |
| 119 | Carcano | Bolt d'Oro | 5H | TP 8 | 1 1/4 syn |
| 117 | Ripton's Music | Maclean's Music | 3C | GP 4 | 6f dirt |
| 115 | Double Neat | Oscar Performance | 4G | GP 5 | 1 mile turf |
| 115 | Light the Way | Justify | 5G | AQU 4 | 7f dirt |
| 115 | Frizzante | Vino Rosso | 4G | AQU 8 | 7f dirt |
| 114 | Arrasou | Mendelssohn | 5M | TP 7 | 6f syn |
| 111 | Russian Realm | Constitution | 4G | AQU 7 | 1 mile dirt |
Fastest maiden winners
Time to Win, the day's fastest horse with a with a 136 HRN speed figure, earned that in a maiden special weight at Aqueduct. The Chad Brown trainee is a 3-year-old ridgling by red-hot sire Not This Time out of the Flatter mare Nagambie. Though Nagambie was winless in three starts, she is a half-sister to Grade 1 winner Fault, who won at the graded level on both turf and dirt. Nagambie is already a proven producer, as she is the dam of Juju's Map, a Grade 1 winner and earner of $775,180.
Ripton's Music impressed with a 117 HRN speed figure in a six-furlong sprint at Gulfstream for $12,500 maiden claimers. The Rohan Crichton trainee seized the early lead and never relented, winning by 3 1/4 lengths while geared down late. The 3-year-old colt by Maclean's Music is the first winner from two starters out of the Stormy Atlantic mare Yangtze Delta, a winning full sister to Canada champion and graded-stakes winner Leonnatus Anteas.
Waveless earned a 110 HRN speed figure at Aqueduct in her debut, which came in a seven-furlong maiden special weight sprint. The 3-year-old filly by Gun Runner, trained by Todd Pletcher, battled on the lead and opened up late to win by 2 1/2 lengths at 2-1 odds. She is the third winner from three starters out of the unraced Malibu Moon mare Malibu Drive. Her half-brother John the Bear won eight times and earned $324,164 on the track. Half-sister La Ville Lumiere, a 2-year-old this year, has won once in six starts and has placed twice in graded-stakes company.
Thursday's top maiden winners
| HRN | Horse | Sire | Age | Race | Distance | Winning Margin |
|---|---|---|---|---|---|---|
| 136 | Time to Win | Not This Time | 3R | AQU 2 | 1 mile dirt | 5 1/2 |
| 117 | Ripton's Music | Maclean's Music | 3C | GP 4 | 6f dirt | 3 1/4 |
| 110 | Waveless | Gun Runner | 3F | AQU 1 | 7f dirt | 2 1/2 |
| 108 | Western Run | Justify | 4G | FG 1 | 1 1/16 dirt | 6 3/4 |
| 103 | Valiant Humor | Practical Joke | 3C | FG 4 | 5 1/2f dirt | 1 1/2 |
| 102 | Oraia | Gun Runner | 3F | TP 5 | 1 1/4 syn | 3 |
| 97 | Carson Street | Street Sense | 2C | FG 8 | 1 1/16 dirt | 11 1/4 |
| 94 | Chayton | West Coast | 2C | TP 1 | 1 mile syn | nose |
| 93 | Rare Society | Central Banker | 3F | AQU 5 | 6f dirt | 2 |
| 91 | Laigina | Leinster | 2F | GP 1 | 7 1/2 turf | 3 1/4 |
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.