Jack managed to damage Zunisha's feet with cannon balls. Fortunately, Kozuki Momonosuke used his power to order for the giant Elephant to fight back. With just one attack, Zunisha wiped out Jack and his entire crew. One Piece Chapter 917 confirmed that Jack survived Zunisha's counter-attack.

Who defeated Jack in Wano?

He managed to sink two of the four Marine battleships that were part of Doflamingo's escort, and despite ultimately being defeated by the entire fleet carrying Vice Admirals Tsuru, Bastille, and Maynard, Admiral Fujitora, and former Fleet Admiral Sengoku; Jack survived the battle while only sustaining minor injuries.

What episode does Jack get defeated?

Episode 774 | One Piece Wiki | Fandom.