Competition in both show jumping and dressage runs from January through April, with some new facilities in place.
The pair added another gold medal to their collection with a thrilling Freestyle performance in front of an appreciative sold-out, SRO crowd.
Lottie Fry and Glamourdale win thrilling Special, while some Canadians did not have the day they had envisioned.
The battle for the individual dressage medals begins now that the top 18 positions have been sorted.
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.
Day one of the World Championships in Aachen is done and dusted, with a couple of strong performances by the Canadian lead-off riders.
Denmark and Great Britain remain in contention after half the field competes; team medals to be decided Wednesday.
A snapshot of the movers and shakers in all disciplines, many poised to compete in the FEI World Championships in Aachen.
Dressage gets underway August 11 with the first day of the Team Final and Individual Qualifier; here's how to follow all the action.