Wild Wonder, sire of grade I winner Wild Fit and Wednesday's $270,000 session topper at the Keeneland yearling sale, has been purchased by Doug Arnold's Buck Pond Farm for stallion duty at the Versailles, Ky., farm. An 11-year-old son of Wild Again, Wild Wonder formerly stood at Spendthrift Farm near Lexington as the property of Winchell Thoroughbreds.Unbeaten Wild Fit captured the Del Mar Debutante Stakes (gr. I) just 13 days after breaking her maiden. She is awaiting the Oak Leaf Stakes (gr. II), and if all goes well, is expected to contest the Oct. 29 Alberto VO5 Breeders' Cup Juvenile Fillies (gr. I).At the Keeneland yearling sale Sept. 21, a Wild Wonder colt brought the top price of the day. The colt sold for $270,000.Wild Wonder, whose progeny earnings is approaching $2 million, also is the sire of 2005 grade II winner Fusaichi Rock Star and two earlier stakes-placed runners. Fusaichi Rock Star is a full brother to Wild Fit.A ultra consistent runner and a grade II winner, Wild Wonder won or placed in 18 of 20 starts and earned $639,036. Wild Wonder is out of the multiple stakes producer Carol's Wonder (by Pass the Tab), and has a number of stakes winners under the second dam, including millionaire Olympio, grade I winner Cuvee, and several grade II winners such as Bien Nicole, Call Now, and Early Flyer.Arnold, who has sold a half-interest in Wild Wonder, will announce the stallion's fee later. Wild Wonder stood for $5,000 in 2005.