- Katherine Coleman and Billy Bandit, her 10-year-old Anglo European gelding, or Monte Classico, Kalai, LLC’s 9-year-old German Sporthorse gelding
- Hallie Coon and Celien, her own and Helen Coon’s 11-year-old Dutch Warmblood mare
- Caroline Martin and Danger Mouse, her own and Sherrie Martin’s 10-year-old Dutch gelding, or The Apprentice, Sherrie Martin’s 14-year-old Irish Sport Horse gelding
Houghton Hall is part of the USET Karen Stives Endowment Emerging Athletes Tour. As the 2018 recipients of the grant, Caroline Martin and Hallie Coon both received funding to compete at Houghton Hall, as well as Bramham CCI3* Under 25 in June.
Leslie Law will serve as Chef d’Equipe for the U.S. team at Houghton Hall, in addition to his role as the USEF Emerging Athlete Coach for the Karen Stives Endowment Emerging Athletes Tour.