The large number of rosettes that Jacqueline Koser has won are testament to her hugely successful equestrian career. She has followed the classical route and has achieved many competition victories from winning lead rein competitions to standing on the podium at Grand Prix tournaments. She always focuses on working with her horses in a purposeful and considerate way. She was a member of the Bavarian team when she was only 11 years old and she was later asked to join the national team. She went on to win championship titles with the German national team.