Continuity mistake: Throughout the various episodes set at the sport facility near Yomiuriland for the final phase of the elementary school tournament, the ferris wheel changes size and number of its carts, and sometimes coloring.
No Easy Way - S1-E12
Audio problem: At the beginning of their conversation outside the house, the Captain and Roberto's audio is off-synch with the mouth animation. (00:01:40)
Kick-Off for the Future - S1-E3
Trivia: International versions change Roberto's message to his coach at San Paulo FC, adding for some reason that he met a girl he fell in love with. This girl is never referenced nor appears, since, well, she does not exist? Roberto mentions that he met Tsubasa instead, who he wants to bring to greatness. (00:12:40)