Quantum Miss looked like a standout on paper and she performed like one on the track to dominate Wednesday night's $75,000 Blue Mountain Juvenile for 2-year-old fillies at Penn National Race Course. Based at Parx Racing with trainer Tony Dutrow, Quantum Miss ($2.60) cruised to a 16-length victory under jockey Jeremy Rose while running six furlongs in a swift 1:09.78. Third in her career debut in September, Quantum Miss defeated open maiden special weight company on Oct. 29 by 5 1/4 lengths in her second lifetime start. Lenape Rim, who defeated $15,000 maiden claimers in her career debut six weeks ago, finished second, 2 1/4 lengths in front of Maryland shipper Ferry Music, a 45-1 longshot.