The Keeneland Association board of directors gave its approval to install a synthetic surface known as Polytrack on the main racetrack during an April 19 meeting. Construction is scheduled to begin in May and the track will be ready for racing when the fall meet opens Oct. 6.

Serenade Rose, ridden by Glen Boss, set a stakes record when easily winning the Australian Jockey Club's $518,986 Australian Oaks (Aus-G1) on Wednesday at Royal Randwick.

Wood Memorial (gr. I) winner Bob and John and Santa Anita Derby (gr. I) runner-up Point Determined both worked five furlongs in a bullet :59 1/5 at Santa Anita Tuesday as they begin their serious training for the Kentucky Derby presented by Yum! Brands (gr. I).

As Delaware Park begins its 69th season of Thoroughbred racing, management has announced a major Las Vegas-style expansion of the facility pending approval from New Castle County, where the track is located.

Delaware Park chief operating officer Bill Fasy said the "master plan for Delaware Park" would be handled by Joel Bergman, the architect behind such notable Las Vegas properties as The Mirage, Golden Nugget, Treasure Island, and Paris Las Vegas. The master plan includes a hotel, restaurants, structured parking garages, and other entertainment offerings similar to those at a Las Vegas casino.