A $1 triple at Laurel paid $50,310.70 yesterday -- a Maryland record -- when Midnight Call (25 to 1), Commercial Magic (136.20 to 1) and Devil's Island (9 to 2) ran one-two-three in the fifth race.

The record payoff resulted when Dancing Hic, the favorite, was disqualified from second for fouling Devil's Island and placed fourth.

There was only one ticket sold on the 12-2-4 combination; no winning $3 tickets were sold. The winning ticket-holder did not cash in yesterday.

Laurel's fifth race also produced the state's record exacta payoff of $7,986.60. The 12-2 combination of Midnight Call and Commercial Magic eclipsed the previous mark of $4,898.20 set Feb. 10, 1984, at Bowie on Salad Girl and Song Of The Harbor.

The previous record $1 triple payoff occurred at Laurel on Nov. 12 when the 5-7-10 combination scored for a $45,11l.70 in the ninth race. There were no $3 triple winning tickets that day, either.

Maryland's highest $3 triple payoff of $68,881.50 occurred at Bowie on Oct. 4, 1974, when Another Flip (80 to 1), Big Grenade (12 to 1) and Noble Seat (86 to 1) came home in that order.

In the feature race, Green Boundary, a 3-year-old allowance filly, came from well off the pace to defeat Rhythmical Dancer in the late yards by a half-length. Jolly Jackie finished third.

Green Boundary was ridden by Donald Miller, his third winner of the afternoon. The Robellino filly paid $7.40 after running the mile in 1:41 2/5 over a fast track. The 2-3 exacta returned $47.80.