 At the 1990 Asian Games in Beijing, Jalnaiz made history by becoming the lone Filipino athlete to win a gold medal in the quadrennial multi-sport spectacle.He defeated Thailand’s Chatree Suwanyod, Nepal’s Suresh Malla Thakuri, Indonesian Franky Mamuaya and South Korean Hwang Kyung-sup en route to winning a gold medal in the bantamweight class.Jalnaiz followed up his Beijing triumph by winning another gold medal, this time at the 1991 Asian Amateur Boxing Championships in Bangkok.