In 20 years, will we be talking about the A.P. Indy male line, as we do now, or the male line of his most prominent current son, Pulpit?

Much ado has been made about the homegrown success of dual classic winner American Pharoah, who is a product of Zayat Stables, which bred and raced his sire (Pioneerof the Nile) and raced and owned his dam (Littleprincessemma).

One piece of the puzzle that often goes overlooked resides at Le Mesa Stallions in Carencro, La.

Champion Zenyatta was confirmed in foal to Claiborne Farm stallion War Front on Wednesday, carrying what would be her fourth foal. The official Zenyatta website reported that the 2010 Horse of the Year was scanned 36 days in foal after an April cover.

The foal will be the second between War Front and Zenyatta, an 11-year-old Street Cry mare, after first producing a filly in 2014. However, that filly was euthanized at six months old following a paddock accident. Zenyatta was not bred for the 2015 foaling season.

Willcox Inn, a Grade 2 winner and first-year sire, was euthanized due to injuries from a paddock accident on May 24.

The 7-year-old son of Harlan’s Holiday was finishing his debut season in the breeding shed at Saratoga Stud in Stillwater, N.Y., where he was standing for an advertised fee of $5,000.

With her victory in the Grade 1 Gamely Stakes on Memorial Day at Santa Anita Park, the Ontario-bred racemare Hard Not to Like added to the worldwide reputation of her sire Hard Spun. The stallion – who currently is based at Darley’s American headquarters in Lexington, Ky. – has five graded/group stakes winners in four different countries thus far in 2015, according to DRF’s SirePowered Results.

In the 35 years since Spectacular Bid followed up his champion 2-year-old male campaign with another championship campaign at 3, only one horse has completed a similar double. From the end of World War II through the 1970s, though, such a championship double was fairly common, and, indeed had been throughout the 20th century in America.

Group 1 winner Hampton Court has been retired from racing and is the first Australian native announced to stand at the newly formed Spendthrift Australia in Victoria.

The 4-year-old son of Redoute’s Choice will participate in Spendthrift Farm’s Share the Upside program, standing for an advertised fee of $8,796 ($11,000 Australian) under the program. He will also be offered for $7,037 ($8,800 Australian) through a standard live-foal contract.

With the eyes of the racing world on Pimlico, young sire First Defence enjoyed a solid weekend, as he was represented by Grade 3 Miss Preakness winner Irish Jasper and Sir Barton Stakes winner Fame and Power. According to Daily Racing Form’s SirePowered Results, the Juddmonte Farms sire is represented by five individual stakes winners this year, in the U.S., Hong Kong, and Ireland.

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Stallion coverage

Leading sires have Mid-Atlantic heritage - by John P. Sparkman

Fasig-Tipton Midlantic 2-year-old sale

High-profile alumni give sale momentum - by Joe Nevills

For more than three decades, North America’s leading sire has stood in Kentucky. It was not always thus.