[3] A triple national born and raised in England,[4] he has represented both Great Britain and the United States.

Jayne was born and raised in London to an American father and a Bulgarian mother, giving him triple citizenship.

[7] Also in 2013 he was a Bronze Medalist at the EYOF (European Youth Olympics Festival) at -90 kg in Utrecht, Netherlands.

While at the University of Chicago, Jayne did collegiate wrestling, before switching his focus back to judo upon graduation.

[18] He was a silver medalist in the 90 kg category at the 2024 Pan American-Oceania Judo Championships in Rio de Janeiro, Brazil.