Episode 66: A Serious Fight! Luffy vs. Zoro: the Baffling Duel!
One Piece Episode 66 „A Serious Fight! Luffy vs. Zoro: the Baffling Duel!“. Adapts chapters 110–112. First aired: 2001-04-22.
- Read on in the manga from: Chapter 113 (Volume 13 – It's All Right!!!)
- Title (Japanese): 真剣勝負！ルフィVSゾロ謎の大決闘！
- Title (romaji): Shinken shōbu! Rufi vs Zoro Nazo no dai kettō
- First aired (Japanese): 2001-04-22
- First aired (German): 2003-07-28
- Category: Story
- Arc: Whiskey Peak Arc
- Chapters adapted: Chapters 110, pages 13-19; Chapters 111; Chapters 112