In addition to the $1,414,800 winner’s share of the Kentucky Derby purse for Orb’s victory, owner/breeders Stuart Janney and Ogden Mills “Dinny” Phipps also will receive a $50,000 bonus from the Kentucky Breeders’ Incentive Fund.

The male line of the immortal Northern Dancer has dominated international breeding for more than three decades, but the distribution of winners by sire line of the first six Northern Hemisphere classics of 2013 has been more even than in recent years.

The principal rival abroad, however, has not been Mr. Prospector, Northern Dancer’s principal challenger for global dominance in recent years, but the resurgent male line of Hail to Reason, and in America, the rapidly rising, almost wholly American line of A.P. Indy accounted for both May classics.

It’s the stuff of nightmares for any trainer: A horse grabs a bite of poppy-seed bagel, a batch of bedding straw contains a little jimsonweed, or a new feed supplement turns out to be loaded with caffeine even though that’s not on the label, and the trainer ends up with a positive drug test.

Joy Gilbert photo, courtesy Spendthrift FarmMalibu Moon

International racing and breeding operation Coolmore has privately purchased three-time Australian Group 1 winner Sea Siren and will add her to its broodmare band, Racing Post reports.

Lethal Leta, a stakes winner, graded stakes producer, and member of the Idaho Racing Hall of Fame, was euthanized May 7 due to foaling complications.

The 22-year-old Synastry mare was the dam of three winners from five to race, led by multiple graded stakes winner Lethal Heat and stakes winner Prevalent.

After a racing career that included four stakes wins and earnings of $655,988, Lethal Heat became her dam’s most expensive offspring, bringing $425,000 as a broodmare prospect at the 2009 Fasig-Tipton Kentucky fall mixed sale.

The Thoroughbred Aftercare Alliance has accredited its first three aftercare organizations for 2013: Florida Thoroughbred Retirement and Adoptive Care in Palm City, Fla.; New Vocations in Marysville, Ohio; and Southern California Thoroughbred Rescue in Norco, Calif. These facilities are now eligible to receive financial support from the TAA for the ongoing care of retired Thoroughbreds.

With all eyes squarely focused on Churchill Downs last Friday and Saturday, a talented and tested colt homebred by one of Thoroughbred racing’s most esteemed partnerships emerged to capture the 139th Kentucky Derby early Saturday evening with a powerful stretch run.

Multiple Grade 1 winner Jackson Bend, who was scheduled to enter stud this year but had his breeding career put on hold due to lingering discomfort from an injury suffered last summer, has returned to training.

All Too Hard, the four-time Australian Group 1 winner who is a half-brother to Horse of the Year Black Caviar, has retired from racing, according to Australian news reports.

Vinery Stud announced the 3-year-old’s retirement on Sunday, with general manager Peter Orton telling media that “The horse has got nothing left to prove.”

All Too Hard, a son of Casino Prince and the Desert Sun mare Helsinge, will stand at Vinery this year for $66,000 in Australian currency, or about $67,591.