Continuity mistake: When Genzo tells Shingo Takasugi to let Tsubasa shoot, Takasugi's hair changes color in the next shot, from his grey-ish shade to pitch black. (00:04:55)
Audio problem: Tsubasa passes the last defender and is one-to-one with Genzo, but the shoot is described as coming from midfield. (00:05:10)
Continuity mistake: Genzo parried Tsubasa's shot. When he waves to his teammates saying it's their chance, he is barehanded instead of wearing his keeper gloves. (00:05:30)
Other mistake: Tsubasa's diving header hits the post square in the front in close-up, but in the wide shot it rolls out for a goal kick to the right of the post. (00:09:20)
Continuity mistake: When Ishizaki is helping Tsubasa to get the ball back, there's a reaction shot on Urabe. His only recognizable teammate is the hat guy, but his hat had the initials "OONN" in the previous episodes, and now the hat says "DONN." You can see the difference in this episode too when Ishizaki has a flashback of their match against Nishigaoka, the hat guy is the keeper. (00:17:00 - 00:18:25)
Other mistake: Supporters cheer Ishizaki when he is trying to break the birdcage tactic. One of the guys who screams at him though is wearing the "S" jersey Shuutetsu supporters wear. (00:17:55)
Continuity mistake: At the time of the injury, Ishizaki's sock in close-up is full white, blue-striped when he gets up. (00:19:30)
Continuity mistake: On his way to goal, Tsubasa realises that the Shuutetsu Trio is chasing him. That is already a pretty big comeback, but Teppei Kisugi tackles him coming from the front, even. (00:20:45)
Other mistake: There were 3 defenders not taking part to the birdcage strategy, but Tsubasa does not have to beat any of them, except Takasugi who tries an American football tackle that would be penalized even by the very loose standards of the referees of this anime, and that happens as if he had to intercept him coming from behind; by every logic he should be in front of him. (00:20:55)
Character mistake: According to the tactical reading of Tsubasa's dad, Tsubasa's flaw is that he's not used to team play since he's just been playing with the ball on his own from a tender age. Just seconds before, Genzo made the comment that Tsubasa is a clever player that can read the passes of his opponents instantly. So he's both clueless about team play and an expert on it in the space of 30 seconds.
Continuity mistake: The patches on Sanae's flag change position when she decides to wave it when she nearly throws herself down from the railing. (00:03:45)
Continuity mistake: Ishizaki kicks the air to show that the injury is no biggie, and then clutches the injured ankle. Which was the right ankle, but his hand is on the left one. (00:04:50)
Continuity mistake: Wakabayashi is still on all fours, dejected after being bested by Tsubasa. He lost his baseball cap parrying the shot in the right corner, but now both his beret and his wounded pride are towards the opposite side of the goal. (00:05:00)
Audio problem: When Urabe gets in the field to ask to be a substitute, western dubs (verified in the Italian and spanish dubs) have Ryo (or "Bruce") ask him who he is. Ryo knows perfectly well who Urabe is, and they played a friendly match just a couple episodes before too. (00:06:45)
Continuity mistake: When he vows to show the true Shuutetsu soccer to the opposing team, Genzo is wearing again the gloves he didn't have on the bench. (00:10:30)
Continuity mistake: When Sanae waves at Tsubasa to cheer for him after Roberto's comedy bit with Ryo (telling him he wished he got injured earlier) the kid to her left has red hair instead of its proper dark color. (00:14:20)
Other mistake: After the first extra time, only 8 players (plus the keeper and Ryo) are back to the bench for all the pep talk and chat. (00:16:55)
Continuity mistake: A rare sight, the Nankatsu keeper actually parries something. When he does that he ends up on the ground, and his face is clean. He gets up, and his face is muddy. (00:18:30)
Other mistake: The linesman's flag as he hands the ball to Taki is unreasonably tiny. (00:18:45)