Yeats Heads The Betting For Irish Field St.Leger Aidan O'Brien's Yeats has been installed as the 1-2 favourite by William Hill for the Irish Field St. Leger at the Curragh on Saturday. The dual Ascot Gold Cup winner will face a maximum of eight rivals including his stable mate Scorpion, who is rated a 10-3 chance to record a dream double having scored in the English equivalent back in 2005.Other notable entries include the Dermot Weld's Melbourne Cup hopeful Bellamy Cay, and John Oxx's three year old More Wells, while Mighty, who finished third in the Hardwicke heads the British challenge.Tony Kenny from Hills commented 'A lot of Yeats backers had their fingers burnt in the last two Irish legers ? so we wouldn't be too surprised if he drifted out in the betting' He continued 'Scorpion is the one that we're wary of, and we expect to see a lot of money for the O'Brien second string over the next few days'Irish Field St. Leger (William Hill Bet): 1-2 Yeats, 10-3 Scorpion, 12-1 Mores Wells, 14-1 Bellamy Cay, Mighty, 33-1 Galistic, Steppe Dancer, The Whistling Teal, Macorville ? E/W 1/5 1-2-3 (All 9 Quaoted)