The 10-time Olympian retires after nearly five decades at the top level of show jumping.
A top show jumper encourages riders to study videos of good equestrian role models, then mimic their style to improve skills in the saddle.
Top international show jumping riders, coaches and course designers, including George Morris and McLain Ward, met during the final week of the 2018 Winter Equestrian Festival in Wellington, Florida, to discuss the future of the sport.