Jas the Latest Star in a Versatile Pedigree

The race named for the first horse to complete the Breeders' Cup Juvenile (G1)/Kentucky Derby (G1) double, the Street Sense Stakes (G3) has already produced a Kentucky Derby winner in 2025 champion 3-year-old male and Horse of the Year Sovereignty. Time will tell whether this year's winner Jas will emulate the successes of past Street Sense stars, but in capturing a Derby points-paying race over the Churchill Downs surface, he has taken an important first step. Jas is a son of 2018 Triple Crown winner Justify, an established classic sire—albeit primarily on the turf—having already been represented by the winners of all three legs of the English Triple Crown through Ruling Court (2025 Two Thousand Guineas Stakes, G1), City of Troy (2024 Epsom Derby, G1), and Scandinavia (2025 St. Leger Stakes, G1). Indeed, of the 11 group or grade 1 winners from Justify's first four Northern Hemisphere crops, eight have scored their principal victories on the grass. The dirt exceptions are 2023 champion 2-year-old filly Just F Y I, successful in that year's Breeders' Cup Juvenile Fillies (G1) and Frizette Stakes (G1); 2023 Woody Stephens Stakes (G1) scorer Arabian Lion; and British Isles, who took the March 7 Santa Anita Handicap (G1). It is worth recalling, however, that Justify's own sire Scat Daddy was best known for his turf runners until the appearance of Justify himself. No doubt, Justify's record in this respect had much to do with Jas making his first three starts on the grass. His debut, in a 1 1/16-mile maiden special weight at Ellis Park, saw him finish a never-threatening fifth. He returned in a similar event over a mile at Kentucky Downs and gave a much-improved performance, leading throughout to score by 4 lengths. Returning just 11 days later over the same course and distance, the chestnut took second in the Juvenile Mile Stakes. Making his dirt debut in the Street Sense, Jas was always close at hand, as he took charge at the head of the stretch, and dug in to resist the challenge of Staunch by a neck. In no small part, the bias toward the lawn shown by Justify's runners can be attributed to the fact that he has been bred to far higher numbers of turf-oriented mares than a typical United States classic performer. For example, he already has 79 starters out of mares by Galileo (with 10 of them winning black-type events). As far as Jas is concerned, his pedigree suggests he might have fallen either way regarding surface preference. His dam Flag Day is by Giant's Causeway—famed in Europe as the "Iron Horse" after a career that saw him earn European Horse of the Year honors, but beaten just a neck by Tiznow in the 2000 Breeders' Cup Classic (G1) in his only try on dirt. As a sire, Giant's Causeway leaned toward turf, but he did sire some excellent dirt runners. Among them are 2014 champion 2-year-old filly Take Charge Brandi, Frost Giant, First Samurai, Swift Temper, Cowboy Cal, Eskendereya, Creative Cause, Carpe Diem, Giant Oak, Brody's Cause, Vexatious, and Book Review, all scoring at the highest level on the main track. Interestingly, his outstanding North American stallion son, Not This Time—himself a grade 3 winner and grade 1-placed on dirt—appears to be showing similar versatility in that regard. Flag Day's dam Sense to Compete—who just happens to be a daughter of Street Sense—won twice in five starts and earned her only black type when second in the 2013 Twin Lights Stakes on the grass at Monmouth Park. Flag Day herself never ran, but she has already produced a quality dirt runner in Hall of Fame. By Gun Runner and inbred to Giant's Causeway, Hall of Fame was briefly on the 2024 Triple Crown trail in Louisiana after breaking his maiden by 10 1/2 lengths at Fair Grounds Race Course & Slots in January of his 3-year-old season. He rebounded last year at 4 to take the 2025 Mineshaft Stakes (G3) and has subsequently earned three more black-type placings, including a second in the 2025 New Orleans Classic Stakes (G2). Sense to Compete is a half sister to Lady Digby, who took the 2008 All Along Stakes (G3T) on turf, but she is also a half sister to Rule One (by Street Sense's sire Street Cry), whose son Diversify excelled going long on the dirt, winning the 2017 Jockey Club Gold Cup Stakes (G1), 2018 Whitney Stakes (G1), and 2018 Suburban Stakes (G2). The fourth dam of Jas, Pete's Heiress, is an unraced daughter of Peteski (who won the 1993 Canadian Triple Crown in the days when two of the three legs were contested on dirt). She is a half sister to the smart performer Private Treasure, successful in four black-type events, including the 1990 Alcibiades Stakes (G2), and was runner-up in the 1991 Ashland Stakes (G1) and 1990 Breeders' Cup Juvenile Fillies (G1), and subsequently the dam of two stakes winners. Behind this, the family has been light for several generations and we don't come to much of note in the direct female line, until we hit Jas' ninth and 12th dams, Wicki Wicki and Crestwood Girl, the dams respectively of 1959 Kentucky Jockey Club Stakes winner Oil Wick and Altawood, who took the 1925 Jockey Club Gold Cup and 1924 Blue Grass Stakes. From there, the family descends via Cammie F, who had the distinction of defeating the top-class runner and subsequent leading sire Himyar in the 1877 Elkhorn Stakes, to Webb's Shepherdess (1781), the foundation of the native American A14 family. In that era, the family was a far more prominent one, represented by such as Longfellow, the leading sire of 1891, and Hall of Fame runner Ten Broeck. Returning to the present, the current branch of the family will be showcased next week at the Keeneland November Breeding Stock Sale, where Denali Stud will present Jas' dam Flag Day (Hip 79) and her half sister Dancing Girl (Hip 811) as part of a dispersal of breeding stock from Jas' breeder Earle Mack. Jas is the second stakes winner from 12 starters by Justify out of Giant's Causeway mares. Justify and Giant's Causeway both trace to the Storm Cat line, and both Jas' grandsire Scat Daddy and his dam represent extended Storm Cat/Mr. Prospector crosses.