The legacy of El Prado, who has emerged as a serious sire-line contender through two sons whose race records and stud accomplishments could not be more diverse.
This year marks the 50th anniversary of the Triple Crown series of 1966 when one horse almost swept the prize, but another horse who never ran in any of those races was named champion 3-year-old male.
Examining the family of Red Sunset for a look at why Thoroughbred families die.
When compared with all the other stallions that retired in 2011, Kantharos came out on top on our weighted average projections.
Judging by how they looked at Gulfstream and Ocala, the seven by Hansen left little doubt that he will help establish Tapit as an emerging sire-of-sires.
We have a unique opportunity to examine both the completely opposite pedigree patterns and remarkably similar biomechanical structures of three leading classics candidates.
Unbridled was the product of a rather atypical son of Mr. Prospector in Fappiano, whose size and length and driving power came from his broodmare sire, Dr. Fager.
Six stallions that are male-line descendants of A.P. Indy are represented in the upcoming Fasig-Tipton Florida juvenile sale.
When Rock Sand swept the English Triple Crown series in 1903, many thought him lucky not to have faced Zinfandel.
The unpredictable nature of this business is illustrated by Colonel John, a top-class runner whose fee dropped to $7,500 for 2016 and suddenly has a pair of colts on the Derby Trail.
Almahmoud, a fairly successful producer in her own lifetime, has become one of the great influences on the modern Thoroughbred.
Looking back to the weekend of Nov. 21-22, when no less than five sons of Giant's Causeway were represented by stakes winners in North America.
In spite of his tremendous accomplishments as a racehorse, Affirmed went to stud in 1980 with modest expectations compared to those being heaped on American Pharoah.
William 'Scott Billy' Buford, left a significant legacy through the sisters Idlewild and Aerolite.
Scat Daddy, a son of Johannesburg, and a great-grandson of Storm Cat, was represented by his seventh and eighth Northern Hemisphere 2-year-old stakes winners of 2015 in Surfside Tiara and Get Jets.
Blitey was as well-bred as a mare could be and still have a rather offbeat pedigree.
For the third year in a row, Gainesway's Tapit leads all North American sires by Comparable Index (CI) of mares bred.
Soaring's daughters as a group were speedy mares. When put to staying sires, however, they imparted a dash of quality speed, putting a finishing touch on Darby Dan's legacy of classic stamina.
Empire Maker has returned to what appears somewhat of a transitional time in the U.S. stallion colony.
Frosted is a son of Tapit, the first sire from the Seattle Slew line to benefit consistently from inbreeding to Seattle Slew.
Bloodroot's title as the inaugural Kentucky Broodmare of the Year added one of the last of many laurels to the career of her breeder Edward Riley Bradley, who died in August 1946.
Sired by half brothers and out of full sisters, Ah Day and Ben's Cat share three of their four grandparents, and the differences between them may have a lot to do with that quarter they don't share.
Super Saver represents the male line of 1969 Kentucky Derby and Preakness Stakes winner Majestic Prince, a branch of the Raise a Native sire line that has been overshadowed by the much more numerous Mr. Prospector tribe.
As well as brilliance, Beholder has also showed rare versatility, scoring at 5 1/2, six, eight, 8 1/2, nine, and 10 furlongs.
Juvenile racing has held a controversial place in American racing since the late 1800s.
30 years after Tasso became the first grade I winner sired by a son of Mr. Prospector, another son of Mr. Prospector, Smart Strike, is emerging as a sire of sires.
Spinaway's family continues to produce runners of the highest class, so the race that carries her name at Saratoga is a wonderful way to keep her memory alive.
Busanda is remembered as the dam of 1966 Horse of the Year Buckpasser, a four-time champion broodmare sire whose name is a familiar presence in pedigrees.
A team of researchers in China and Australia generated statistics that suggest a mother's influence may actually be more important than a father's influence when it comes to racing ability.
A son of the brilliant Italian champion Nearco, Nasrullah was one of a cluster of important sires from his immediate family.
Just a week after the completion of an epochal Triple Crown series, the Stephen Foster threw up a new star in Noble Bird.
Olympia entered stud in 1951 at Danada Farm in Kentucky and proved a prolific sire, getting 40 stakes winners (12%) until his retirement in 1967. His progeny tended to have ample speed like himself.
Triple Crown winner War Admiral's name appears eight times in American Pharoah's pedigree.
Looking at his pedigree, it's not too surprising that Solow's connections -- trainer Freddy Head and owner/breeders Wertheimer et Frere -- would have expected Solow to require a test of stamina.
When Tom Bowling was a foal in 1870, a visitor remarked the colt would never stay a mile. Brilliant, quirky, and downright dangerous, he grew into one of the greatest runners ever bred in America.
The obvious question is whether American Pharoah, a colt gifted with excellent speed, has the stamina to master the "Test of the Champion," the 12-furlong Belmont Stakes (gr. I).
Lovely Maria does have some of that old-fashioned classic stamina on her dam's side, as she's out of Thundercup, an unraced daughter of the Kentucky Derby (gr. I) and Belmont Stakes (gr. I) winner Thunder Gulch.
American Pharoah's roots are steeped in Hyperion blood, put together by Florida horseman Fred Hooper.
The second weekend in April saw a career high for veteran sire Exchange Rate, as his daughters Ball Dancing and Miss Ella both won graded stakes.
Fifteen years after Dubai Millennium won the Dubai World Cup, his son sired both Dubai World Cup winner Prince Bishop and UAE Derby winner Mubtaahij.
In America, Glencoe was the leading sire eight times between 1847 and 1858. His best runners included the champions Peytona, Charmer, and Reel, all great fillies, winning at upward of four-mile heats.
Line of David is off to a promising start to his stud career -- he is near the top of the 2015 second-crop sire list. So far he has been represented by two stakes winners: Firing Line and Cross the Line.
Group III-placed at 3 in France and stakes-placed at 4 in the United States, Pompoes went on to become a successful broodmare and a reminder that class can emerge from unlikely places.
Blushing Groom was brilliant on the track and one of the greatest international sires ever brought to America.
Three of Smart Strike's best sons-who retired to stud in the space of four years-are shaping up as if they have the potential to make their way to the upper echelons of the North American stallion colony.
Although Upstart has a better pedigree for getting a distance than many of his contemporaries, there is reason to think he might be better suited to intermediate distances.
Racing lore says that a good, big horse can beat a good, little horse, or wait, is it the other way around?
Far From Over stems from one of the most prolific branches of the Betty Derr family, that of his fourth dam, the 1983 Kentucky Broodmare of the Year, Courtly Dee.
Even though Final Chapter isn't a 'typical' Nerud, he may yet prove a fitting epilogue to the story of one of the great figures of the American turf.
Cinderella became a mother to two great American sire lines through her sons Hastings (1893) and Plaudit (1895).
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