Clock Stopper earned his first career stakes win Thursday with a sharp victory in the $108,300 Perryville Stakes at Keeneland. Trained by Dallas Stewart for Overbrook Farm, Clock Stopper sat off the early pace contested by Ballado Chieftan and Champali. The leading pair went the opening quarter mile in :22.79 and the half in :47.53 to open up more than three lengths on Clock Stopper, the even-money favorite. With jockey Robby Albarado aboard, Clock Stopper mounted a four-wide bid around the turn and surged to the front entering the stretch.Clock Stopper opened up 1 1/2 lengths at the eighth pole and crossed the wire 2 1/4 lengths in front of Ballado Chieftan, who was making his stakes debut off a maiden win for trainer Nick Zito. Champali was another 1 3/4 lengths back in third. Final time for the about seven-furlong contest was 1:25.53.Clock Stopper has now won four of nine career starts and the $67,146 winner's share of the purse boosts his career earnings to $189,361. The 3-year-old son of Gilded Time has blossomed in the second half of the year. He won an allowance race two starts back at Saratoga by 6 1/4 lengths and entered the Perryville off a second-place finish in the Kentucky Cup Sprint (gr. III)."He's gotten a lot better with age," Stewart said. "Overbrook is very patient. It was a big effort today and there are bright things in front of him."Stewart added he was not sure whether Clock Stopper would be pointed to the Breeders' Cup Sprint (gr. I), but Overbrook Farm manager Ric Waldman said it was being considered."It's possible but a lot of it will be left in the hands of Dallas," Waldman said.Clocks Stopper was produced by the Farma Way mare Great Fun. Bred in Kentucky by Dr. Lance Bell and David Hochberg, he was purchased for $110,000 at the 2001 Keeneland September yearling sale.