7 riders are competing on home turf: Erynn Ballard is bringing FAVE D'AUTHUIT and HER GAME BALL BG. Carly Cooper-Campbell will start BARETINO PS. Mario Deslauriers will ride LATINO. Susan Horn will be competing with DOMINKA VAN DE LUCASHOEVE and BALINTORE. Sean Jobin will be counting on DONNER and STERREHOF'S EDINUS. The last two combinations for Canada are Amy Millar with CHRISTIANO and Nicole Walker with ATOUT DES TRAMBLES.

Belgium is sending one combination: Pieter De Brabandere and FIRST CHOICE HT.

Vaclav Stanek will represent the Czech Republic with GISBORNE VDL.

European Champion Richard Vogel will also be present with MICHAEL JACKSON W and KOMET 306.

Great Britain will be represented by Jessica Mendoza and SUMMERHOUSE.

6 athletes will be present for Ireland: Daniel and Jordan Coyle will bring a total of 5 horses. Darragh Kenny will compete with LIGHTNING, MISS OBOLENSKY and AMSTERDAM 27. Simon Mccarthy is bringing GOTCHA and LEONARDO S. David O'Brien will be riding EL BALOU OLD and BIRKEGAARDENS MALIBU DWB. The last rider for Ireland is Conor Swail. He'll bring MY LADY LAVISTA as well as CASTURANO.

Olympian Daniel Bluman will also be present in Ottawa with KAPITAAL L, representing Israel.

A total of 15 riders will compete for the USA: 

Sloane Coles will start with NINJA JW VAN DE MOERHOEVE and LIMONCELLO Z. Kent Farrington will ride GARRISON, GRASS DE MARS and ORAFINA. Delaney Flynn is bringing CASSINNIA. Kama Michelle Godek is trusting CHARISSA for the week in Canada. Elena A. Haas will ride FOR COKE Z and CLAUDE. Savannah Jenkins has chosen to bring BRESIL DE CARNAVAL SANTA ROSA. Mckayla Langmeier will take her chance with CHADINA and PEPITA VD ROLLEBEEK. Caroline Mawhinney is putting her trust in DANCE DU BUISSON Z and HALLILEA. Jonathan Mc Crea will bring CHACCOTILINO PS and JANNAN S. Brian Moggre has chosen to put his trust in MTM VIVRE LE REVE. Alise Oken will ride 3 horses: BONHOMME RICHARD, FORRESTAL and GELVERA. Sarah Segal will be riding TOM HANKS. Adrienne Sternlicht has chosen CAYETANA and ORIGA V/H ZUID-PAJOTTENLAND for the 5* competition. Alessandra Volpi is putting her trust in GLAMOUR and QANNANDO B & V. Mclain Ward is the last rider competing for the States with HIGH STAR HERO and SNAPCHAT VAN DE BROEKKANT Z.