B. Wayne Hughes’s Spendthrift Farm and Starlight Racing teamed up to purchase a colt by First Samurai for $575,000 Wednesday at Keeneland. The chestnut (hip 794), bred and consigned by Arthur Hancock’s Stone Farm, is a half-brother to Grade I winner Mastery (Candy Ride {Arg}).

“He is just a really, really nice individual,” said Spendthrift General Manager Ned Toffey, who did his bidding alongside Starlight’s Jack Wolf and Frank Brothers. “The fact that he is a half to Mastery is a pretty nice bonus.”

The two operations teamed up during Monday’s first session of the September Sale to purchase a Street Sense colt (hip 14) for $700,000.

“We wound up on the same horse a little earlier in the sale and did the same thing here,” Toffey explained of the partnership. “We just happened to land on the same horse. They do a great job and we’re happy to be partners with them.”

The yearling is out of Steady Course (Old Trieste). Hancock purchased the mare, in foal to Yes It’s True, for $20,000 at the 2009 Keeneland November Sale.

Mastery sold to Cromwell Bloodstock, as agent for Everett Dobson’s Cheyenne Stables, for $425,000 at the 2015 Keeneland September Sale. The dark bay colt was unbeaten in four starts, including last year’s GI Los Alamitos Futurity and this term’s GII San Felipe S. and begins his stud career in 2018 at Claiborne.