User blog comment:Fintin/Garp and Chinjao/@comment-1595565-20130425104237

Maybe he just holds a grudge and needs a victim to vent out his anger. This little beef he has with Garp probably won't turn out to be too significant. It's just a way to build suspense and develop a character a little. Even if this grudge was important, it's certainly nothing strange. Garp chased a lot of pirates back then like Roger and co, Shiki, Shakky, and now Chinjao. Chinjao stays mad, enters the tournament, and sees a convenient vengeance opportunity. You're overthinking this.