The course was a "sea of slop" at Bowie yesterday, which proved to be perfect for a dark bay 4-year-old colt aptly named Piped Aboard.

Six horses contested the $28,150 Bowie Handicap, a mile and a sixteenth event for 3-year-old and older runners. Piped Aboard indulged Dancer, the longest price on the board winner took command on the turn for home and drew off easily to score by 4 1/2 lengths.

Bold Play closed gamely to take second place, seven lengths before the tiring Dancer. Go Go Roger, the 7 to 5 favorite, never was in contention, finishing fifth.

Piped Aboard, the second choice of 12,319 fans, returned $9 straight and combined with Bold Play to return $71 on the 2-7 exacta. The winner's time for the distance was 1:48 2/5. Robert Gilbert rode the victor.

Piped Aboard earned $18,297.50 for his owner. Albert Puleicher, of Lincoln, Va. The colt amassed $46,186 last season.The Bowie was his first start of a year that promises to ber very rewarding. Don Bradley trains Piped Aboard.

Speed held up extremely well over the Bowie strip yesterday. One of the few front-runners to be caught near the wire was Rest The Quadrant, which dropped a nose decision to Shenandoah River in the $10,000 seventh race.

These two sprinters had the result all to themselves through the stretch, with Shenandoah River rallying nicely along the inside under Chris McCarron to pay $9.20 straight and return a $21.80 exacta with the favorite. Shenandoah River conceded the runner-up 10 poinds in completing the six furlongs in 1:12 4/5.