Uncle Mo was expected to be a fine sire of juveniles. After all, he had been an Eclipse Award champion 2-year-old himself. However, no one could have predicted the scope of his early success, as he broke the mold with a record-setting freshman season.

American Pharoah knocked it out of the park as a racehorse, first becoming a long-awaited hero for the sport when connecting for the 2015 Triple Crown, and then again dazzling the crowd with a victory in the Breeders’ Cup Classic. Thoroughbred marketing dubbed the combination of victories the sport’s first “Grand Slam.”

“The Giving Tree,” a 1964 children’s book written and illustrated by Shel Silverstein, follows the lives of an apple tree and a boy as he grows. The namesake tree gives to the boy throughout his life, even as his needs change – from a place to play as a child, to her branches to build a house as a young man, to a place to rest when he is elderly.

Like the apple tree, Into Mischief can do it all.

Champion Zenyatta lost the foal she was carrying earlier this month, her connections reported Tuesday morning, the latest incident in a streak of bad luck for the Hall of Fame racemare as a broodmare. 

Four Wheel Drive, a Breeders' Cup winner as a juvenile, has been sold to begin a stallion career in Japan. The 4-year-old by American Pharoah will become the first son of his Triple Crown-winning sire to stand at stud.

Caddo River threw his name into the ring for Kentucky Derby consideration with a 10 1/4-length score in Friday’s Smarty Jones Stakes, the first race in Oaklawn Park’s series of Kentucky Derby prep races. In the process, the Shortleaf Stable homebred continued nearly a century of success for his tail-female line.

Caddo River’s dam, Pangburn, by Congrats, became the ninth consecutive member of her direct female line to produce at least one stakes winner. The young broodmare is one of three stakes winners produced by her dam, the Yes It’s True mare It’s True Love.

On one of the first major racing weekends of 2021, the incoming stallion class of 2016 continued its major success. Colonel Liam, from the first crop of Liam’s Map, won the Grade 1, $1 million Pegasus World Cup Turf at Gulfstream Park. One race later, his classmates Tapiture and Constitution were represented by Jesus’ Team and Independence Hall, second and third, respectively, in the Grade 1, $3 million Pegasus World Cup.

Daily Racing Form's annual special edition takes an in-depth look at the past year's leading stallions standing in Kentucky, the epicenter of the North American Thoroughbred industry, as well as surrounding states in the Midwest region.

City of Light has emerged as one of the commercial standouts of his class of sires early on, a run that continued at last week’s Keeneland January horses of all ages sale.

Knicks Go and Harpers First Ride finished their respective 2020 seasons with momentum. They will look to keep up that momentum for their sire, Paynter – a top 20 North American sire for the season – when they start in Saturday’s Grade 1, $3 million Pegasus World Cup at Gulfstream Park.

Knicks Go, a Grade 1 winner as a juvenile in 2018, returned to his best form to win his three starts by a combined 21 1/4 lengths in 2020. Most recently, that included a 3 1/2-length score in the Breeders’ Cup Dirt Mile on Nov. 7 at Keeneland, in which he set a track record.