Caoimhe's Delight took the INH Stallion Owners EBF Dawn Run Mares Novice Chase at Limerick in a dramatic finish to the feature Grade Two contest.
Lucy Wadham sent Baby Shine over from her Newmarket yard and the eight-year-old looked poised to win as she held the advantage at the final fence in the hands of Leighton Aspell, but she took a crashing fall.
Byrnes completed a double when classy hurdler Domination (evens favourite) took the Charleville Cheese Beginners Chase by two lengths under Gold Cup-winning jockey Davy Russell, who appeared to have the race in the bag when Ludo Et Emergo unseated at the last.
Edward O'Grady's Kitten Rock was sent off the 1-5 favourite for the Greenmount Park Event Centre Hurdle after winning easily on his jumps debut and there was never much doubt about the outcome as he led from halfway under Paddy Mangan to beat Irish Bulletin by seven lengths.
Sherika (8-1) and Hillman went on approaching the straight in the Adare Heritage Handicap Chase and there wasn't much between them all the way to the line as the former, trained by Harry Kelly, got home by half a length under Sean Flanagan.