Factual error: In this episode we have a random person showing up and being admitted to the team and playing as substitute on the spot, with nobody protesting. He puts on the (sweat-soaked, presumably!) uniform of another player and just goes ahead without any check from the referee or assistants. Given that the match is between two schools without necessarily having the official football federation involved, it is understandable, but they do not even ask the opposing coach if they are OK with something so obviously outside of any established rule. And they are still playing in a packed stadium, with official referees and even a radio commentator! Only in anime.
Other mistake: The linesman's flag as he hands the ball to Taki is unreasonably tiny. (00:18:45)
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)
Other mistake: Masaru falls into the river and Tsubasa follows him getting knee-deep and with socks and shoes on, but the moment they step out of the water both are perfectly dry and have no problem or discomfort at all. (00:07:20)
Other mistake: In the Italian dub, Ryo ("Bruce Harper" as he is known in international versions)'s mom yells at him for running away with the football...but Ryo is not carrying any ball. (00:05:05)
Character mistake: Tsubasa runs with the ball from kick-off, which is not allowed. The player who touches the ball first can't touch it again until another player passes it to him. (00:03:45)
Character mistake: Tsubasa takes part in the 200m dash because, as Ryo says "the runner of our team got injured." The runner? There are many athletes taking part in the contest, but both come from just 2 teams. Also needless to say, the race would have also been invalidated, and yet Tsubasa who showed up with no permission and kicking a ball is proclaimed the winner. (00:07:25)
The Football Is My Best Friend - S1-E4
Character mistake: Everyone is making a sincere effort to avoid touching the ball with their hands for the whole episode, even to the point of getting in late at school, but when the kids are waiting in line behind Ryo peeping into the classroom, a few of them have their hands on the ball. (00:06:45)
The Football Is My Best Friend - S1-E4
Other mistake: In the opening shot of the dinner scene, Tsubasa's soccer ball is on the chair next to him and as logic dictates it is below table level. Later though it is much higher. Conversely, Roberto's head in other shots is so low that looks like he's sitting on the floor. (00:04:45)
The Football Is My Best Friend - S1-E4
Continuity mistake: Roberto instructs the players to take their football everywhere. Ryo is the first to do so, but the soccer balls are in different positions from the beginning of the scene when he started the speech, even if Roberto hasn't moved. (00:02:20 - 00:03:20)
Other mistake: Needless to say, having a football on your belly can't cushion the impact with a truck. Even forgiving this obviously cartoonish impossibility, still the way Tsubasa lands looks all kinds of wrong, with the forward momentum instantly halted as the ball touches the ground again. (00:14:25)
Continuity mistake: In the flashback, Tsubasa's father all of a sudden between cuts has his hand on top of the head before realizing that the kid is missing. (00:10:15)
Continuity mistake: Tsubasa dribbles 9 to 11 players in his first sprint, never stops advancing when tackled (he jumps over the offenders), dribbles 5 more, but in front of the penalty area there are at least 8 new guys ready for him. (00:07:05)
Continuity mistake: Tsubasa is athletic and quick and goes straight towards the goal starting from the kick-off spot at midfield, but a couple of opponents he dribbled try to tackle him again, and are incoherently shown as tackling from the front even if they came from behind. (00:07:00)
Continuity mistake: In his first dribble, Tsubasa goes past 3 opponents, but there's just one behind him in the next shot. (00:06:50)
Audio problem: When the handball team captain is about to throw, the ball bounces making the sound it'd make if he were bouncing it indoors, not on a grass field. (00:13:40)
The Brothers Tachibana - S1-E22
Continuity mistake: Just in front of the penalty area, Misaki dispossesses the Tachibanas thanks to Teppei Kisugi's distraction. Tsubasa then does a long pass to midfield for a trio of players...including Kisugi. (00:14:00)
The Brothers Tachibana - S1-E22
Continuity mistake: The players are celebrating their victory. Urabe and Ishizaki in the middle are celebrating, but Urabe has Taki's teeth in the first shot, and in the second there are two Misakis and a Teppei Kisugi behind them - he should be in front of them. (00:01:40)
Other mistake: Hyuga comfortably catches with his chest a free kick that for no reason seems to have basically lost any strength and speed between shots. (00:09:30)
Character mistake: Rare instance in this anime, a foul is given when four players from Meiwa tackle Tsubasa at once and hook his foot when he successfully evaded them. In truth though, any referee should have blown the whistle already way before, since the four ganged on Tsubasa throwing themselves at him multiple times before that one, each time sticking their leg out without even aiming at the ball - Tsubasa has to literally duck to avoid one of those tackles.
