AIG attracts field of 12 The Aidan O'Brien-trained Istabraq, as expected, is not among the 12 confirmations for the AIG Champion Hurdle at Leopardstown on Sunday.O`Brien, who will run Kilcash Castle in the two-mile event, said of Istabraq today: 'He`s only back trotting and so far he seems grand.'Edward O`Grady`s Ned Kelly, who worked well after racing at Punchestown on Saturday under Jamie Spencer, is on course to restore a reputation that has been dented by defeats on his last two starts.Limestone Lad stands his ground but it is likely he will bypass the race in favour of an engagement at Naas on the previous day.Four British-trained runners are among the confirmations.Geos (Nicky Henderson), Hors La Loi III (James Fanshawe), Milligan (Venetia Williams), and The French Furze (Nicky Richards) are the cross channel hopefuls.