Who Is the World's Greatest? The Tournament Preliminaries Begin! is the one-hundred-sixth episode of Dragon Ball Z Kai in the international release. It is the fourth out of 8 episodes that had an original title produced for the episode due to it containing more footage than it's Japanese episode release, and therefore long enough to become its own episode. Its American air date is February 25, 2017.
Summary
The preliminary rounds begin. The fighters must hit a punching machine to rank their strength, with the Dragon Team effortlessly qualifying, with Vegeta destroying the machine with a punch. Afterward, Goku and the others decide to go and watch the tournament of the "Juniors" section.
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