Mr. Besilu, who sold for $4.2 million as a yearling, has been retired and will enter stud at Eureka Thoroughbred Farm in Fredericksburg, Texas, for 2015. His fee has been set for $2,000, the farm announced on Friday.

From one point of view, we should never be surprised when a horse just below top class as a racehorse becomes a top-class stallion. We know, after all, that genetics accounts for only 35 to 40 percent of racing ability, which means that environment, how and where the horse was raised, trainer and grooms, pushy or laid-back owners – in short, everything else you can think of – accounts for the other 60 to 65 percent of the ability expressed in a horse’s race record.

J. Kirk and Judy Robison are standing at the threshold of what could be an unforgettable week for their breeding and racing operations. The couple has five homebreds in four stakes on the $2 million New Mexico Classic Cup card at Zia Park on Sunday, while their Mico Margarita is revving up for a start in the Grade 1, $1.5 million Breeders’ Cup Sprint at Santa Anita on Nov. 1.

WinStar Farm has acquired a half-interest in Grade 1 winner Daredevil, in partnership with owner Let’s Go Stable.

The 2-year-old son of WinStar Farm stallion More Than Ready is undefeated in two starts, most recently winning the Grade 1 Champagne Stakes at Belmont on Oct. 4. He is scheduled to make his next start in the Breeders’ Cup Juvenile on Nov. 1 at Santa Anita. WinStar also co-owns another top Juvenile contender in Grade 1 Breeders' Futurity winner Carpe Diem, also owned in part by Stonestreet Farm. Both colts are trained by Todd Pletcher.

English classic winner Ruler of The World has been retired from racing and will begin his stallion career at Coolmore’s Irish base in Co. Kildare, Ireland, for the 2015 breeding season. A fee will be announced at a later date.

“Ruler of The World has a recurrence of the muscle injury in his hind quarters that he suffered earlier in the summer and although it’s not critical, we have advised that he be retired to stud,” said Ballydoyle vet John Halley.

The stakes winners Boisterous and Unusual Heatwave will begin stallion careers at Tommy Town Thoroughbreds in Santa Ynez, Calif., in 2015, farm manager Mike Allen said on Thursday.

Boisterous, a 7-year-old horse by Distorted Humor, retired earlier this month after winning 12 of 35 starts and earning $1,458,792. He will stand for $5,000.

Three Chimneys Farm in Midway, Ky. has released the its advertised stud fees for the upcoming 2015 breeding season.

Topping the list is Will Take Charge, a 4-year-old son of Unbridled’s Song and the champion sophomore male of 2013, who will stand his debut season for an advertised fee of $30,000.

WinStar Farm in Versailles, Ky., has released the advertised fees for its 22-horse stallion roster for the 2015 breeding season.

Flagship sire Distorted Humor once again tops the WinStar roster with an advertised fee of $100,000. The 21-year-old son of Forty Niner’s fee remains unchanged from the 2014 breeding season.

J. Michael O’Farrell’s Ocala Stud in Ocala, Fla. has released the advertised fees for its 2015 stallion roster, led by newcomer Uncaptured.

Uncaptured, the 2012 Canadian Horse of the Year, will stand for an advertised fee of $6,000 in his debut season at stud.

The fees for the returning stallions remain largely unchanged, with a pair of reductions.

Laurie’s Rocket, whose two career stakes win came in Arkansas, will be returning to the state to launch his stallion career in 2015. The horse will stand at McDowell Farm in Sparkman, Ark., and his fee has been set at $1,000 live foal, said farm manager Bill McDowell.

Laurie’s Rocket is due to arrive from Kentucky in about a week, said McDowell.