Afleet Again, the longshot winner of the 2011 Breeders’ Cup Marathon, died in Korea on April 12 after a bout of colic. He was 11.

The cause of death was originally reported by Alastair Middleton, the Korean Racing Authority’s English-language racecaller, on his website “Horse Racing in Korea.”

Afleet Again, a son of Afleet Alex, was bred in Kentucky by Chuck Zacney’s Roll Z Dice Racing Stable and he raced under Zacney’s nom-de-course Cash is King for his first two and a half seasons. Robert Reid Jr. trained Afleet Again throughout his career.

The stallion career of the late Scat Daddy arguably reached its pinnacle on Kentucky Derby Day, with Derby winner Justify highlighting his four sons entered in the race. His résumé was further bolstered last Friday when his daughters filled out two-thirds of the trifecta in the Grade 3 Edgewood Stakes at Churchill Downs.

Air France, dam of Grade 2 winners Smooth Air and Overdriven, was euthanized May 2 due to complications from foaling. She was 19.

According to a press release from Crestwood Farm, the mare’s newborn Bernardini colt is in good health and has been transferred to a nurse mare at the Lexington, Ky., farm, where Air France spent the majority of her broodmare career.

The Kentucky Oaks undercard at Churchill Downs featured two milestone graded stakes wins for under-the-radar sires in Country Day and Tizway.

Backyard Heaven’s win in the Grade 2 Alysheba Stakes was the first graded winner for his sire, Tizway, who now resides in South Korea.

Spendthrift Farm resident Into Mischief’s stock continued to rise over the Kentucky Derby weekend, with a slate of successful 3-year-old runners at Churchill Downs.

Ghostzapper, Horse of the Year in 2004, lost his chance to be represented as a sire in the Kentucky Derby several weeks ago when son Runaway Ghost was declared from the classic with an injury. But the Adena Springs stallion was still represented as the broodmare sire of unbeaten Derby favorite Justify – who delivered in a big way to key a stellar weekend for the stallion.

When juvenile racing heats up this summer and fall, all eyes will now be on two 2-year-olds who got big catalog updates from their siblings’ performances under the twin spires over the weekend. Egyptian Storm is a half-sister to Kentucky Derby winner Justify, while Cowboy Diplomacy is a full brother to Kentucky Oaks heroine Monomoy Girl.

Elliott Walden has a roadmap in mind when buying horses for WinStar Farm and its partners, and the success of Kentucky Derby winner Justify and third-place finisher Audible are the latest examples of trusting the process.

When Scat Daddy retired to stud in 2008, he exemplified four of the five characteristics most commercial breeders look for first in a prospective stallion. He had been precocious enough to win a Grade 1 at 2, showed two-turn ability by winning a Grade 1 at 3, he came from an excellent female family, and he was an outstanding physical specimen - a big, powerful, correct horse with lots of muscle and polish. The one negative was that his sire, Johannesburg, was an unfashionable horse who was not in any way considered a likely sire of sires.

Scat Daddy was a talented and tough racehorse who debuted with brilliancy and continued on to become a Grade 1 winner at both 2, when he took the Champagne Stakes, and at 3, when he rolled in the Florida Derby. He typically dug in when facing a challenge in the stretch.