Previous medalists Ijsbrand Chardon and Christoph Sandmann will compete alongside their offspring, but will anyone be able to beat Boyd Exell?
Jumping action is poised to get underway at the FEI World Championships, with 31 teams, 25 individuals and 51 nations represented.
The Brits win another important championship, the German gives a masterclass with Chipmunk, and Canada's Jessica Phoenix and Lacey place 30th.
Medalists were chosen in highly-competitive individual male and female, pas de deux, squad and team divisions.
Lottie Fry and Glamourdale win thrilling Special, while some Canadians did not have the day they had envisioned.
Day 1 of eventing dressage got underway with a solid test for the sole Canadian, while Tom McEwen (GBR) and JL Dublin set the benchmark.
Following the Compulsory test, Averill Saunders sits in third place in the women’s competition and Talmage Conrad is fifth in the men’s.
Athletes, lungers and horses have gathered as the world’s leading vaulters challenge for the FEI Vaulting World Championship titles.
The host team edged Great Britain and Denmark, helped by a personal best from Katharina Hemmer riding Denoix PCH.
Brittany Fraser-Beaulieu and Jaccardo lead the way for the Canadian effort and qualify to compete in Friday's Grand Prix Special.