According to the AAQHC website: "The Equine Chronicle Congress Masters Western Pleasure class is open to two-year-old horses that have not previously shown (maiden horses) and is approved by NSBA. "
These are two-year-old horses. Most, if not all of the riders are pros. I recognized some names but I didn't bother to google thme all. Most ride client's horses, the winner this year was the horse's owner as well as exhibitor and they received a check for $75,000. The video includes the whole class and the placings so you get a nice look at some of the body angles as the winners lope up to receive their awards.