TOPWEIGHT Little Big Horn can defy the handicapper and win the fourth event tonight to continue trainer Lawrie Fownes' determined challenge for the championship. Although John Moore has had his mythical odds clipped to at best 5-4 to retain the title, Fownes is keeping up the pressure and a win from Little Big Horn in this particular event would be significant. ''John has two runners involved, Caramba and See The King, and I reckon they are both real threats to my fellow. It's one of those races whereif it goes my way it is doubly significant - and vice versa,'' said Fownes. But the long-serving mentor is confident Little Big Horn will carry the 138lb - a hike of nine pounds for his handy course and distance win last time. He said: ''He is a strapping individual, a bulky type and he should carry it although there are no guarantees.'' Certainly, Little Big Horn won with commanding ease last time out making all to win by 21/2 lengths and gave the impression that had he come under pressure he would still have found enough. The horse has tended to come to himself late and on the syntheticsurface. But he is an Irish five-year-old and, like their Kiwi counterparts, they can take time to really get to grips with the racing game. In the case of Little Big Horn, he has clearly been helped by the equitrack. But there also appears to be enough determination and ability to see him through again in a Class Five event. Caramba does look well and is a credit to Moore who got a handy winout of him over this trip in lower company last time. However, rather like Little Big Horn, he did win much as he pleased and he ran a solid time for the trip. It is difficult not to see him being involved here and Moore's other runner, See The King, has also shown a liking for the surface in the past. He did get away with a Sha Tin mile event earlier this season but he could be thereabouts tonight. It is a handy double-pronged attack for the champion trainer. Both Mr Nice Guy and Karaoke have some claims.