Avum, a 4-year-old filly, came from off the pace yesterday to win the $27,000 Nellie Morse Handicap on Pimlico's closing day by three lengths over Glory Glory.

Majestic Julie finished third, a nose back. Avum was ridden by Vincent Bracciale, who tied Chris McCarron with 40 wins for the meeting. Bracciale had earlier scored with Soft Night in the fourth rce. Avum returned $4.60 to win and ran the six furloughs in 1:10 4/5.

The Nellie Morse, Pimlico's final feature of their abbreviated meeting, became a battle for second place in midstretch as Avum drew off. Jockey Gerald Grenier, astride Bright Work, claimed foul against Glory Glory, ridden by Leroy Moyers. The protest was disallowed.

The second, third and fourth place finishers finished less than a half lenght apart.

The racing scene shifts to Bowie today for the second time this year. The track will host for the second time in three years a 47-day combined Bowie Laurel-Pimlico summer session May 31 through July 23. Post time is 1 p.m. daily and there will be exacta wagering in races two through eight and triple wagering in the ninth.

Topping opening day is the third running of $27,700 Pimer Stakes for 2-year-olds at five furlongs. Privateer is the overnight favorite.

A recent winner of the To Market Stakes at Hawthorne Park in Illinois, Privateer will tote top weight of 119 pounds and will be coupled withstablemate Forever Casting which gets in with 113.

Chief contention to the Del Carrolltrained pair is expected to come from Iron Streak, a full brother to Iron Derby, a mutliple stakes winner. Iron streak won his lone start at Pimlico and has since worked briskly for today's engaement, the son of Iron Ruler will be ridden by Danny Wright and is weighted at 113.

Another with expected backing is the fily, Mesa Warrant, a 10-length winner of her debut under Greegg McCarron. The daugther of Double Warrant carried 119 pounds in her debut and will shoulder 110 in the Primer.

Other in the Primer with solid credentials are Rough Sea and Fabled Prince. Trained by Tom Kelly, Rough Sea will benefit from the saddle services of French jockey Jean Cruguet of Seattle Slew fame.

Fabled Prince, a son of speedy Kaskaskia, won his last two starts at Hialleah, the first in 58 3/5, Fabled Prince has no rider named overnight and is trained by William Mullin. The colt worked a half at Atlantic City in 46 4/5. Completing the field of eight promising juveniles are Famous Czare and Lucky N Right.

The final day card at Pimlico attracted 14,954 customers, who pushed $1,518,266 through the betting machines. This brought the total for the 38-day meeting to $44,399,961 in the wagering and the attendance to 430,178.

Cormorant, the colt that finished fourth in the Preakness, outran For-The Moment in the final quarter-mile to win the $124,200 Jersey Derby at the Atlantic City race course today.

Iron Constitution, second to Seattle Slew in the Preakness, finished 3 1/2 lengths behind Cormorant. Hey Hey J.P. finished third and For the Moment finished fourth, almost six lengths back.

Cormorant finished the 1 1/8-mile course in 1:50-2/5, almost three seconds off the track record. He paid $4.80, $3 and $2.60.

The 15th running of the Jersey Derby, a race for 3-year-olds, marks the end of Graden State Park's 25-day emergency meeting here. The grandstands and clubhouse of the Cherry Hill track were destroyed by fire April 14.