Jonjo O'Neill's More Of That and the Gordon Elliott-trained No More Heroes are among 50 entries for the RSA Chase at Cheltenham on March 16.
The pair are unbeaten since their attentions were switched to fences and are likely to take all the beating, although Willie Mullins will give it a good go with 13 entries which include Outlander, Black Hercules and Roi Des Francs.
The Nigel Twiston-Davies-trained Blaklion, Brian Ellison's Definitly Red and Monksland from Noel Meade's yard also appear.
Native River, Seeyouatmidnight, Southfield Royale, Vyta Du Roc and Maximiser are all in the mix at this stage, as is Ben Pauling's Local Show, a winner at Kempton this week.