Pretty sure Jan is the first KSW champion to become UFC champ. 17-0 KSW FW and LW champ Mateusz Gamrot was announced as signed with the UFC right around the time as Chandler so all fans and media have talked about is Chandler but don't sleep on Gamrot.
Debuts on the Korean Zombie card vs Mustafaev.
The 2020 UFC LW division was the best division in the history of the sport prior to the Chandler and Gamrot signings but its still great to see them both signed.
On a sidenote, Fight Circus had a precursor… Circus of Pain!
"In the beginning there was darkness, then came light, traditions of martial arts in this part of the world have new quality now. This quality is better known as three integrated symbols, real signs of mixed martial arts triumph, the quality named K, S, W!".