John, 33, moves to 50 contests without defeat following an impressive 119-109 (twice), 117-111 win over the previously unbeaten Thai fighter Chonlatarn Piriyapinyo and moves on to 48-0-2 as his opponent drops to 44-1.
25 year-old Yordan scored a similar victory to John by carding a 119-110, 118-110, 117-11 unanimous decision over veteran Choi Tseveenpurev to push his record up to 30-2, with UK-based Choi, 41, losing for the sixth time in 42 bouts.
Arnel Tinampay, Mohamad Rizan, Muhammad Meeraj and Qiu Xiao-Jun all scored wins on the undercard.
