Gulfstream stakes winner tops daily speed figures
Shaq Diesel posted Sunday's highest Horse Racing Nation speed figure with a 128 at Gulfstream Park in the Benny The Bull Handicap. The 5-year-old horse by Khozan won the seven-furlong stakes race at 9-5 odds in a dominant win by 4 1/4 lengths. This marked his eighth career victory in his 26th career start.
Sweet Azteca earned a 125 HRN speed figure at Del Mar in the Rancho Bernardo Handicap. The 5-year-old mare by Sharp Azteca captured the 6 1/2-furlong stakes at 2-5 odds, securing her seventh career win from nine starts.
Awesome Rhythm completed the top three with a 125 HRN speed figure at Del Mar in an allowance optional claimer. The 6-year-old gelding by First Samurai won the six-furlong dirt race at 9-2 odds for his sixth career victory from 19 starts.
Saturday's top 10 speed figures
| HRN | Horse | Sire | Age | Race | Distance |
|---|---|---|---|---|---|
| 128 | Shaq Diesel | Khozan | 5H | GP 9 | 7f dirt |
| 125 | Sweet Azteca | Sharp Azteca | 5M | DMR 2 | 6 1/2f dirt |
| 125 | Awesome Rhythm | First Samurai | 6G | DMR 8 | 6f dirt |
| 125 | Rhetorical | Not This Time | 4G | SAR 8 | 1 1-16 turf |
| 123 | Great Navigator | Sea Wizard | 5H | MTH 8 | 6f dirt |
| 121 | Kalahari Dreams | Country House | 3G | SAR 6 | 6 1/2f dirt |
| 117 | Friendly Ghost | Outwork | 4G | WO 9 | 7f syn |
| 117 | Light Fury | Wicked Strong | 8G | GP 8 | 1 1/16 syn |
| 115 | Sbagliato | Quality Road | 5G | DMR 9 | 1 mile turf |
| 115 | Westwood | Authentic | 3G | DMR 1 | 1 mile dirt |
Fastest maiden winners
Westwood posted the day's highest maiden winner figure with a 115 HRN speed figure at Del Mar. The 3-year-old gelding by Authentic won a one-mile dirt maiden special weight at 6-5 odds in his sixth career start. He is out of Indian Bay by Indian Charlie, and his top sibling Shivaji earned $995,000 and was Grade 3-placed by First Samurai.
Rancho Santa Fe impressed with a 106 HRN speed figure at Ellis Park in his debut. The 2-year-old colt by Tapit captured a one-mile dirt maiden special weight at 7-1 odds. His dam Family Tree is a Smart Strike mare who earned $733,000 and was Grade 2-placed, and his top sibling Heroic Move by Quality Road has earned $934,000 and was Grade 3-placed.
Maruvy earned a 106 HRN speed figure at Gulfstream Park in his fourth career start. The 3-year-old colt by Omaha Beach won a 1 mile, 70-yard synthetic maiden special weight at 3-1 odds. He is out of Malibu Party by Hard Spun, and his top sibling Good Lord by Lord Nelson has earned $102,000.
Saturday's top maiden winners
| HRN | Horse | Sire | Age | Race | Distance |
|---|---|---|---|---|---|
| 115 | Westwood | Authentic | 3G | DMR 1 | 1 mile dirt |
| 106 | Rancho Santa Fe | Tapit | 2C | ELP 7 | 1 mile dirt |
| 106 | Maruvy | Omaha Beach | 3C | GP 5 | 1 3/32 syn |
| 105 | Batter Up | More Than Ready | 3G | ELP 1 | 1 1/8 turf |
| 104 | Bedford the Brave | Omaha Beach | 3F | SAR 7 | 1 mile turf |
| 103 | Reading Time | City of Light | 3F | ELP 9 | 1 mile turf |
| 102 | Zabo | Justify | 3G | WO 4 | 1 1/16 turf |
| 100 | Willful Mama | War of Will | 3F | SAR 1 | 1 mile turf |
| 99 | Golden Truth | Tunwoo | 3C | WO 2 | 7f syn |
| 97 | The Grumpy Rabbit | Not This Time | 2F | ELP 2 | 1 mile 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.