Now, Heavenly Prize, the matriarch of the barn at the age of 5, will cross the line to challenge colts.

Eliza, the prize filly who was groomed to challenge colts in the Kentucky Derby, returned to racing other fillies today with the goal of reclaiming her rank at the head of the class.

Even the filly Meadow Star was undefeated at this time last year and seemed ready to challenge colts for the Triple Crown.

Her trainer, Leroy Jolley, said afterward that he was pleased with the condition of his 3-year-old star, who won all seven of her races last year and who may challenge colts in the Triple Crown classics this year.

Shug McGaughey said that he was entering My Flag as only the 20th filly in 128 years to challenge colts in the Belmont because "some of them might be a little suspect."

Her handlers have even raised the possibility that she might challenge colts in the Belmont Stakes June 10.

Sky Beauty in Lead They are led by Sky Beauty, who may challenge colts on the track this fall and when votes are counted for the final honor of Horse of the Year.

Serena's Song, the filly who started racing colts in last year's Kentucky Derby, and outran them in last year's Haskell, is back at Saratoga and up to her old tricks, challenging colts again in the Whitney Handicap on Saturday.

At Monmouth Park in New Jersey, Serena's Song challenged colts one more time but ran third behind the Canadian star Smart Strike in the Philip H. Iselin Handicap.

She won two more races this year, then challenged colts in the Wood Memorial and ran fourth.