The US rider looks to defend his title as a new season gets underway with the $340,000 Longines FEI Jumping World Cup.

A snapshot of the movers and shakers (and how the leaderboards were shaken up) following the World Championships in Aachen.

In the Driving World Championship for Single Horses, Canadians Kelly Bruder and Alexia Guillemette placed 30th and 58th, respectively, and 12th as a team.

Twenty nations represented by a record 85 entries, including two from Canada, will compete at the German venue for team and individual medals.

The German has leap-frogged ahead of Kent Farrington (USA) to take over at the head of the Longines Rankings for the first time in his career.

It was concluded that the Australian dressage and eventing athlete engaged in horse abuse after a video was posted on social media that launched an investigation.

Canadian Para Dressage riders Bert Sheffield and Jody Schloss both finished 5th in their respective Finals, with Schloss logging a personal best score.

The Swiss rider became the first from his nation to win individual jumping gold on a day that was full of surprises and some remarkable stories.

Kate Shoemaker topped the scoring as Para Dressage wrapped up at the FEI World Championships; two Canadians grab 5th-place finishes.

The Australian driver took his eighth consecutive title, while the Netherlands captured the Team Driving gold in Aachen.