Newry and Londonderry showjumpers, Lorcan Gallagher and Jordan Coyle, showed their class in Tryon, North Carolina by claiming two major classes.
Gallagher, who joined Heathman Farms earlier this year, just started a new partnership in May with Sangris Boy and excelled to take the $25,000 Marshall and Sterling Grand Prix
from 54 starters and a 10 horse jump off. Sangris Boy scorched round to win in 36.57seconds ahead of Adrienne Sternlicht (US) in 36.68.
Gallagher said: "The horse's long strides were an advantage in the second round with the long gaps between each jump. He has a lot of potential."
Multiple winner Coyle and Picador claimed the $37,000 Power and Speed class in 25.14 secs from 42 starters. "Luckily I have one of the fastest horses there is," said Coyle. "The faster you go, the less chance he has a fence down."
Strabane Grand Prix specialist Jonathan Smyth partnered Charlton Clio to win the 1.40 Autumn Grand Prix at Cavan from 45 starters with runner up going to Dromore's John McEntee and Hip Girl. Immun Ocean O'Gara, owned and bred by Alan Robertson, from Fivemiletown, and partnered by Brendan Murphy, were successful in the 1.30m Grand Prix from 62 starters.
Both Grand Prix saw McEntee take second on Hip Girl, while Moville's Kenneth Graham was third in 1.40m on Willie Lapsley's George and third with the Margaret McGahan's Beir Bua in 1.30m.
Fermanagh's Catherine Thornton and Coachella have claimed the 2020 Horsesport Ireland six year old national championship. The horse was bred in Portadown by Tom and Linda Magee.
Cooley Rosalent, bred in Dromore, Co Down by Woods Rosbotham and ridden by GB's Oliver Townend was runner up in the Young Horse 6 years World finals at Le Lion d'Angers, France.
Lisburn showjumper Michael Beattie bred Ardeo Premier was fourth in the World seven year olds with GB rider Alexander Bragg while Galway's Cathal Daniels was fifth in the six year old World finals with LEB Empress.
Banbridge eventer Susie Berry and Kilcandra Capitol were 11th in seven year olds, while Gilford's Stephen Smith and Mike of Mourne finished 16th in six year olds.