Christopher Spell is a professional dunker from New York and the Guinness World Record holder for the highest standing jump. He is 5'9", which makes the numbers he produces harder to explain rather than easier.
The record is a standing jump of 1.70 metres, five feet seven inches, set in Shrub Oak, New York in February 2021. He first took the record in July 2019, lost it that September to Brett Williams of Texas, and then took it back. A standing jump is a purer test than a running vertical because there is no approach to convert into height; it is entirely what the legs can produce from a dead stop.
He holds a second Guinness record as well, for the highest standing backward somersault, set in November 2021. That combination says something specific about how he trains. Most dunkers build for a running takeoff off one or two feet with a plant that redirects horizontal speed upward. Spell has built for output with none of that assistance, which is closer to Olympic lifting or gymnastics than to basketball.
The training happens at Team Moljo, a strength and conditioning facility in Shrub Oak, and he has been unusually public about the method, posting the work rather than only the results. That has made him a reference point for people trying to raise a vertical rather than just watching dunks, and it is why his audience skews toward training rather than highlights.
He also appeared on The Bachelorette, which put the jumping in front of an audience that had no idea the discipline existed. Dunkademics has filmed him at The Dunk Camp alongside the rest of the professional field, where the standing numbers translate into a bag built on explosion rather than hang time.