Malvina-Christina Nikolaidi, Athens College Junior High School Grade 3 student, participated in the following championships:

• In the Balkan Equestrian Championship, held at the Olympic Equestrian Center in Markopoulo on September 9-10, 2023, and won 1st place in the team event, in the Youth category, in Equestrian Skill.
• In the Panhellenic Equestrian Skill Championship, held at the Olympic Equestrian Center in Markopoulo on December 1-3, 2023, and won 2nd place in the Youth category.