Roger James is confident that Killarney can make his mark in top company over the next couple of seasons.
The Cambridge trainer has long held the four-year-old in high regard and he gained a good degree of satisfaction from the son of O'Reilly's winning performance in the Harness Racing Waikato Premier at Te Rapa yesterday.
Killarney has now been successful in four of his seven starts and will be turned out to allow him more time to strengthen.
"He's been a big, gangly horse and I think there is a big race in him," James said.
"I've got a lot of faith in him and had he done things more correctly today he could have been more decisive.