THE PLAINS, Va., Oct. 20 -- John Bosley's whipping and driving paid off down the stretch when Oliver P. Keelan's Joe's O.K. posted a two-length victory over Gary Baker's Glyn in the International Gold Cup timber race in a time of 7:27 2/5.

"I gave him a good crack going into the last just to keep him on his toes," Bosley said. "Then I hand rode him to the finish."

Joe's O.K. took the early lead but was hard-pressed to keep it, being challenged initially by So Eager, and then by Tom Miller. When Don Yovanovich moved Glyn up with three-eighths of a mile to go Bosley said he had to "really stay into Joe's O.K. He jumped beautifully. That's what got me up there again."

Trainer-rider Jack Fisher of Monkton found himself alone at the wire when he and Irving Naylor's Woody Boy Would took the $15,000 Laura A. Lawrence hurdle race in 4:25.3. Fisher also won the $7,500 maiden timber race aboard Push And Pull, winning over Wolf Meadow and R. Stephen Williams by 3 1/2 lengths.

Charles Fenwick III, 16, claimed his seventh victory of the season when he guided Mill Run Stables' Riposto to take the $10,000 Protocol Cup over Hilliate, ridden by Gerry Newman. The young rider rated Riposto off the pace in force until the next to last fence making up ground over the last and sustaining his advantage by two lengths at the wire.

Bettina Belmont Ward's Chicken won the last race after stewards allowed a claim of foul by Newman. The English-born Victoria Schlesinger was second with Naskra Express but she had already ridden a winner: Bruce Fenwick's Sabas in the $5,000 Fauquier 'Chase. Lara Robinson rode Jimmy Day-trained Royal Rating to victory in the Buyers Cup, the first race of the day.