Potesta, who is the second highest-placed horse of the session so far, was bought by Barbara Banke's Stonestreet Stables from Three Chimneys Sales, agent.
A daughter of Macho Uno , she won the 2012 Hollywood Oaks (gr. II) for trainer Mike Mitchell and owners Anthony Fanticola and Joseph Scardino. She also set a track record last year at Del Mar in the Torrey Pines Stakes when she covered one mile in 1:34.86. Potesta won that race by 7 1/2 lengths Sept. 2.
Never worse than second in four career starts, she has won three races and placed second once, for earnings of $192,400. Potesta previously sold for $75,000 at the 2010 Fasig-Tipton Kentucky fall yearling sale.
Four-year-old Potesta, who was bred in Kentucky by Maynard Farm and B.A. Man Inc. is out of the stakes-winning Furiously mare Katzen and is a half sister to the group I-placed Buddha horse Kabu.
John Moynihan, bloodstock advisor for Stonestreet Thoroughbred Holdings, said Potesta impressed him on the track.
"She was a runner," Moynihan explained. "She would have been in the (Breeders' Cup) Ladies Classic (gr. I) and she would have been a force to be reckoned with. She was rockin'. We're happy to have her. I just think if she had not been injured, she would have been a force in the Ladies' Classic based on the numbers she ran, the races she ran."
No stallion decision has been made yet.
Four-year-old Princess Arabella, a daughter of Any Given Saturday, was bought by Frank and Jane Lyon's Georgetown- Ky.-based Summer Wind Farm. Consigned by Taylor Made Sales, she is in foal to Tapit .
Undefeated in three starts, Princess Arabella most recently scored an eight-length victory in the Sunland Park Oaks in March 2012. She has earned $188,400 for trainer Bob Baffert and John Fort's Peachtree Stables.
Princess Arabella is out of the Thunder Gulch mare Tortuga Lady and is a half sister to the stakes-winning, grade III-placed mare Dyna's Lassie (by Dynaformer).
Jane Lyon of Summer Wind Farm was pleased to land Princess Arabella.
"She's a beautiful mare who obviously had tons of talent," Lyon said of the mare, who was bred in Kentucky by Greenwich Cattle Company. "She's young and we're happy to have her."
Lyon said a stallion decision has not been made and added that she'd look into who's available.
Later, Volt Resources purchased grade III winner Stars to Shine for $320,000. The 6-year-old Tale of the Cat broodmare prospect was consigned by Sweezey and Partners, agent.
Frank Angst contributed to this story