Former Hong Kong jockey Greg Childs scored a brilliant all-the-way victory on Isca in the Group One Lightning Stakes (1,000 metres) at Flemington. Prepared by Peter Hayes, Isca, who is by Rory's Jester, is raced by international owner Robert Sangster. In winning, Isca became the first three-year-old filly since Cap d'Antibes in 1975 to win the Lightning Stakes. It was her fourth victory from six outings. 'She couldn't have been more impressive,' Childs said of Isca. 'She just jumped and ran. After we'd gone a hundred metres or so I was confident she was going to win.' Isca, who started 7-4 favourite, was challenged by At Talaq five-year-old Toledo about 200 metres from home. Toledo, who was having his first start since finishing down the track in the Hong Kong International Bowl (1,400 metres) at Sha Tin in December, drew to within a length of Isca soon afterwards. However, she responded to the urgings of Childs and drew away for a comfortable win. Toledo battled on for second two lengths astern, with Snippets four-year-old Scandinavia taking third. Isca will now probably attempt to complete the Sprinting Triple Crown by winning the Oakleigh Plate (1,100 metres) at Caulfield on Saturday week and the Newmarket Handicap (1,200 metres) on March 6. Another former Hong Kong jockey, Damien Oliver, aboard favourite Rose O'War edged out Childs on Northern Song in the Coolmore Vanity (1,400 metres). It was Oliver's third win of the day and he now leads the Melbourne jockeys' table from the injured Brett Prebble.