Yu-Gi-Oh! Duelist - Duel 019

"I Won't Lose!", known as "I Won't Lose!!" in the Japanese version, is the nineteenth chapter of Yu-Gi-Oh! Duelist in the English version and the seventy-eighth chapter of Yu-Gi-Oh! in the Japanese version.

It was first printed in Japanese in the V Jump magazine. It was reprinted in volume 2 of ''Yu-Gi-Oh! Duelist'' and volume 6 of the bunkoban.