The One Piece fandom is buzzing once again as Chapter 1167 brings new light to one of the series’ enduring mysteries: the origin of Whitebeard’s massive chest scar.
Though Whitebeard is no longer active in the current timeline, fans remain obsessed with figuring out who could have inflicted such a wound on one of the strongest characters in the story.
Earlier speculation pointed to either Roger or Shanks, but Chapter 1167 introduces a new possibility: Shanks’ twin brother, Saint Shamrock. Could he have been responsible for this legendary injury?

Shamrock and Shanks Manga One Piece
In the anime and manga, both Shanks and Shamrock were raised in the Holy Land as God Knights.
Some fans argue that Whitebeard’s comment about Shanks’ face resembling the one who gave him the scar might point to Shamrock.
Yet when timelines are examined, the theory starts to falter. Whitebeard did not carry this scar during the God Valley era, Oden’s era, or even during Roger’s execution.
This timeline discrepancy suggests that the Pirate King, Roger, could not have been responsible.
For Shamrock to have inflicted the scar, he would have had to fight Whitebeard at his prime while still a teenager—a scenario that seems highly unlikely, given that Chapter 1167 only depicts him in training, far from god-tier combatant status.