Olympian David Marcus is among North America's top dressage competitors. A dual citizen of the U.S. and Canada, he rode for the United States throughout his highly successful Young Rider career before taking up the Canadian flag for numerous senior international teams. He and Chrevi's Capital represented Canada at both the 2012 London Olympic Games and the 2014 Alltech FEI World Equestrian Games in Normandy, France.

In 2013, David and Chrevi’s Capital won the North American League for the World Cup qualification. Wins at prestigious events including Dressage at Devon and the Adequan Global Dressage Festival with Chrevi’s Capital and Don Kontes have cemented David’s reputation as a top-notch competitor. David went on to win the 2016 Adequan/USDF Intermediate II Dressage Horse of the Year Award aboard Binjora.

During the 2018 Adequan Global Dressage Festival, David debuted his upper-level mount, Dean Martin, in the national show Grand Prix. The pair took first place in each class they entered with impressive scores, remaining undefeated in every class.

Most recently, David has debuted his new upper-level horse, Qosmo, in the FEI Prix St. George. During the 2022 AGDF season, the pair earned impressive scores including a 74.2% to secure first place. David and Qosmo will be returning to the Adequan Global Dressage Festival ring for the 2023 season.

Along with his accomplishments in the show ring, David is a well-respected trainer who has helped students of all levels work to achieve their goals. He has coached multiple students to podium finishes at the North American Junior & Young Rider Championships, as well as to many national show and CDI GP wins.