George Williams has dedicated his life to the sport of dressage, having competed both nationally and internationally at the highest levels. He began his riding career in Europe and trained with the Tempel Lipizzans for almost 20 years. He then proceeded to represent the U.S. Dressage Team in international competition in the early 2000s with appearances at FEI World Cup Finals and Aachen. 

With Rocher, Williams finished fifth in the 2003 FEI Dressage World Cup in Sweden and also was a membe rof the bronze medal team at the 2005 CHIO Aachen. He currently serves as the US Equestrian Dressage Youth Coach, as well as the High Performance & Pathway Development Advisor. Williams is also currently serving his fourth term as President of the United States Dressage Federation. 

Hallye Griffin grew up in Lexington, Ky., competing in the discipline of eventing and as a member of the United States Pony Club. She attended Transylvania University in Lexington, Ky., and majored in Political Science. Beginning her employment in the 2010 Alltech® FEI World Equestrian Games Organizing Committee in the Competition Department, in 2011, Griffin joined US Equestrian as the Director of Dressage National Programs. Following the 2015 Pan American Games, Griffin was promoted to Managing Director, Dressage. Griffin’s role as team leader includes managing all logistics around the selection process and preparation for the Olympics, as well as coordinating the day-to-day plans for the U.S. Dressage Team while at the Olympics.

Katie Johnson Duerrhammer has had success through the Grand Prix level with Quartett, Kylee Lourie’s Brandenburg gelding, since getting the ride on him ahead of the 2020 competition season. In 2021, the pair earned good scores and top placings, including second place in the FEI Grand Prix at week 11 of the Adequan® Global Dressage Festival, third place in the FEI Grand Prix Test at the U.S. Dressage Festival of Champions, and third place and a personal best score of 71.533 in the CDI4* FEI Grand Prix at Tryon Spring Dressage. They kicked off the 2022 season with wins in the CDI3* FEI Grand Prix Special at AGDF 3 and the CDI4* FEI Grand Prix at AGDF 5. They were selected to represent The Dutta Corp. U.S. Dressage Team at the FEI Dressage Nations Cup^TM Germany CDIO5* in the summer of 2022.

With Kylee Lourie’s Westphalian gelding, Paxton, Duerrhammer earned scores in the 70s and wins in the FEI Grand Prix and FEI Grand Prix Special at AGDF 6 in 2022. They went on to win the CDI3* FEI Grand Prix and Grand Prix Special at World Equestrian Center Dressage III before being named to The Dutta Corp. U.S. Dressage Team for the 2022 FEI Dressage Nations Cup The Netherlands CDIO5*.

Duerrhammer is an alumna of the North American Youth Championship, having won team and individual gold as part of Region 7 in 2008 with Pam Brown-Schachter’s KWPN gelding, Millenium.

Ashley Holzer was a staple in the Canadian dressage community for nearly four decades. Her accolades as part of Team Canada include four trips to the Olympic Games (London 2012, Beijing 2008, Athens 2004, and Seoul 1988, where she won her team bronze medal) and as a three-time Canadian WEG competitor (Lexington, Ky., 2010; Aachen, Germany, 2006; and Jerez de la Frontera, Spain, 2002).

In 2017, Holzer officially declared she would ride for the U.S. Dressage Team. With Havanna 145, she was part of the gold medal-winning team at the FEI Dressage Nations Cup™ USA CDIO3* in Wellington, Fla. She repeated the feat the following year, assisting the team to a gold medal at the 2019 FEI Dressage Nations Cup USA CDIO3* with Valentine.

In early 2022, Holzer earned wins with Valentine in the FEI Grand Prix at Palm Beach Dressage Derby and in the CDI3* FEI Grand Prix and Grand Prix Special  at AGDF 11. She traveled to Leipzig, Germany, for the FEI Dressage World Cup™ Final with Havanna 145, where they finished in the top 10 in both the FEI Short Grand Prix and the Grand Prix Freestyle to Music. With Valentine, Holzer was part of the silver medal-winning team at the 2022 FEI Dressage Nations Cup The Netherlands in Rotterdam, where they finished third individually in the Grand Prix and fifth in the Grand Prix Freestyle.

Born and raised in Whidbey Island, Wash., horses have always been a part of Adrienne Lyle’s life. Beginning in the United States Pony Club, and growing up with only occasional group riding lessons, Lyle qualified for and competed in the North American Youth Championship in 2004 riding Miguel. She went on to ride with her future coach, Olympian Debbie McDonald, as a working student in 2005.

In 2006, Lyle earned the ride on Wizard, the 1999 Oldenburg gelding, owned by Peggy and Parry Thomas. The combination would move to the Grand Prix level together and win numerous prestigious titles, including the 2008 USEF Young Adult Brentina Cup. In 2012, they represented the U.S. at the Olympics in London, and in 2014 competed at the Alltech FEI World Equestrian Games™ in Normandy.

In 2018, Lyle and Salvino competed on all three U.S. Dressage Nations Cup teams, helping the U.S. earn gold at FEI Dressage Nations Cup™ USA, bronze at FEI Dressage Nations Cup The Netherlands, and silver at FEI Dressage Nations Cup Germany before being named to the team that ultimately won the team silver medal at the FEI World Equestrian Games Tryon 2018.

Lyle and Salvino were part of the bronze medal-winning team at the 2019 FEI Dressage Nations Cup Germany CDIO5* at CHIO Aachen. In 2020, Lyle rode Harmony’s Duval on the team that won gold at the FEI Dressage Nations Cup USA CDIO3* in Wellington, Fla. The pair repeated the feat at the 2021 FEI Dressage Nations Cup USA, where they also swept the individual standings in the FEI Grand Prix, FEI Grand Prix Special, and FEI Grand Prix Freestyle to Music.

With Salvino, Lyle posted scores in the 80s to win the CDI4* FEI Grand Prix and FEI Grand Prix Special at AGDF 12 in 2021, then repeating those wins at Tryon Spring Dressage 1 before being named to the team for the Tokyo Olympics that summer, where they won the team silver medal.

In 2022, Lyle rode Salvino to first-place finishes in the FEI Grand Prix and FEI Grand Prix Special at AGDF 11. They traveled to CHIO Aachen that summer, where they finished in second place in the CDI4* FEI Grand Prix.

Born in Wesel, Germany, Steffen Peters came to the United States in 1984 to work for trainer Laurie Falvo in San Diego. Southern California was a good fit for Peters, and he made the decision to stay, and became a U.S. citizen in 1992. He has been one of the country’s top international dressage competitors ever since, having represented the U.S. at five Olympic Games, four FEI World Equestrian Games™, and two Pan American Games.

Peters rode his KWPN gelding, Udon, to team bronze in his first Olympic outing in the Atlanta 1996 Olympic Games. With Legolas 92, he won team and individual gold at the Toronto 2015 Pan American Games and team bronze at the Rio de Janeiro 2016 Olympics. With his longtime mount, Ravel, the KWPN gelding owned by Akiko Yamazaki, he won the FEI Dressage World Cup™ Final in 2009 and individual bronze at the 2010 WEG in Lexington. He has been recognized for his accomplishments with three USEF Equestrian of the Year titles, in 2008, 2009, and 2011.

Peters has built a phenomenal record with his current top horse, Suppenkasper, a KWPN gelding owned by Akiko Yamazaki and Four Winds Farm. In their first year together, they helped the U.S. team earn silver at the FEI World Equestrian Games™ Tryon 2018. They were undefeated in 2020 through the Adequan® Global Dressage Festival in Wellington, Fla., and the CDI3* at Desert Dressage in Thermal, Calif. The pair kicked off 2021 in the same fashion, winning the Grand Prix and Grand Prix Special CDI4* at AGDF 3 and the Grand Prix and Grand Prix Freestyle CDI5* at AGDF 7.

Peters and Suppenkasper were part of the silver medal-winning U.S. Dressage Team at the Tokyo 2020 Olympic Games, where they also placed in the top 10 in the Grand Prix Special and Grand Prix Freestyle to Music.

In 2022, Peters and Suppenkasper swept the Grand Prix and Grand Prix Special CDI3* close to home in Thermal and Temecula, Calif., before traveling to compete in Europe for the summer. They represented the U.S. at the FEI Dressage Nations Cup Germany CDIO5* at CHIO Aachen, then went on to win the Kronberg CDI4* Grand Prix and Grand Prix Freestyle in July. The pair again represented the U.S. at the ECCO FEI World Championships in Herning, Denmark. They closed out the year winning the Grand Prix and Freestyle CDI-W at Desert Dressage II and III.

Peters and Suppenkasper began 2023 by winning the Grand Prix and Freestyle CDI-W at Desert Dressage IV.

Peters and his wife Shannon, a U.S. Dressage Federation bronze, silver, and gold medalist and three-time National Championships competitor, operate SPeters Dressage out of Arroyo Del Mar in San Diego, Calif.