The Christy McSweeney Memorial Novice Chase in the feature event on day two of the Killarney Festival and sees Willie Mullins and Ruby Walsh teaming up with Sin Palo.
The eight-year-old overcame a final-fence blunder to make a successful start to life over the larger obstacles at Kilbeggan, and is one of five last-start winners in the six-runner line-up.
Definite Class will be a tough opponent, with experience on his side, and carried Nina Carberry to a victory on the level at Tramore most recently.
Catcherinscratcher chased home Carlito Brigante here before going one better at Tipperary, while The Amarillo Kid couldn't have done it any easier at Tramore.
Patrick Mullins will be in the saddle for his father when Drive Time reverts to the Flat in the Killarney Veterinary Clinic (QR) Race.
He returned from a spell on the sidelines to score at the Punchestown Festival and, on NH ratings, is closely matched with Whatever Jacksays, who hammered last week's Cork winner Dare To Doubt at Leopardstown.
Learn showed some improvement between his first couple of appearances of 2012 and sets a high standard in the Easy Clean Ltd. Race.
His trainer Aidan O'Brien will be keen to get a win into Wonderful but the Irish Oaks entrant is more exposed than Mona Brown and Hayloft, who tackle her in the opening Irish Stallion Farms EBF Fillies Maiden at 5.40.
Sure Reef let down favourite-backers when only second last week but will have his supporters again as he takes on another recent Leopardstown runner-up in the shape of Miss Forde in the Anglo Printers Handicap.
Sunday's impressive Sligo winner Harangue does battle with Cork victor Our Girl Lucy in a clash of the penalty-carriers in the Malton Handicap Hurdle, while Instant Impacked has been relatively freshened since his Ballinrobe triumph and attempts to follow up in the Mike Cronin Readymix Ltd Handicap Chase.
