Other mistake: When Miss Ozora tells Roberto that he should have shown her The Letter from the beginning, Tsubasa is drawn looking in the wrong direction. (00:17:25)
Other mistake: When Ishizaki is unwrapping his leg from the bandages, he's wearing the football boot he is NOT wearing before and afterwards. (00:15:10)
Other mistake: Misaki's dad just arrived at the stadium, and seeing his son play, he strokes his beard with a satisfied look. Problem is, he's still standing and the hand that rubs his chin was holding a toolbox he did not have time to put down (or anywhere to place it on, for that matter). (00:10:40)
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)
Kick-Off for the Future - S1-E3
Other mistake: When Manabu is approached by the bully, his glasses in close-up lack the bridge. (00:13:40)
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)
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)
Blocked Off - S1-E6
Other mistake: Masaru apologizes for the blunder (he butted heads with a teammate). Tsubasa cheers the rest of the team; look at the goalkeeper. He's wearing the same uniform as the rest of the players instead of his red jersey. (00:08:05)
Other mistake: When Misaki does a long pass for Tsubasa, Tsubasa is actually right by his side. (00:09:50)
Other mistake: Tsubasa's mom calls him because the movers' truck is leaving. He kicks the ball outside the window, and is downstairs to catch it, quite the impossible feat especially when you factor in that he kicked the ball with not much of a vertical trajectory, almost in a straight parabolic pattern out of the window, and meanwhile he also found time to wear and fasten his shoes. And it's not even played up as something strange. (00:03:00)
Other mistake: When the title of the episode appears, Hyuga's sheets in the hospital room do not match his body shape. (00:02:50)
I Can't Play - S2-E7
Other mistake: Misaki dispossesses Akira Ichinose with an aerial tackle (which would be illegal anyway, since he's by every mean doing a flying kick at an opponent), but for that to happen the way it is shown, the player already must have lost control of the ball, since Misaki 's foot is hooking a ball situated behind the back leg of Ichinose. It's not what it is supposed (and described) to happen. (00:15:20)
Other mistake: Sanada passes the ball to Honma as per Misugi's instructions. Honma gets it and runs...in the opposite direction, towards his own goal! Somehow it is the right direction, though. (00:13:20)
I Can't Play - S2-E7
Other mistake: Tsubasa is way behind Misaki and coming in at a slower speed, but somehow Misaki throws a deep ball to him - and Tsubasa almost catches it! It's impossible to do that in the way shown. (00:13:20)
Other mistake: All of a sudden and with no explanation, in this episode the coach and the cheerleading team have things like whistles and megaphones that they never brought to matches before and didn't have when the match was underway in the previous episodes. (00:05:55)
The Verification Test - S1-E16
Other mistake: 15 players were picked for the team. Genzo is injured, 11 are playing. Three are MIA with no explanation. Morisaki has to parry 10 shots for every other player, he parries 100 total. Ryo Ishizaki though is still a substitute, so that would mean there's the unexplained absence of even one more team regular.
The Fight for the Final - S1-E24
Other mistake: At the end of the previous episode, Taki crossed for the corner, and the keeper punched the ball before Kisugi could head it. This episode shows that Taki crossed for Izawa instead.
Other mistake: In the aerial view of the stadium that follows the intermission with the sushi chef and Genzo at his mansion, there are 23 players on the field. One is the referee, you might say. In that case, the view is missing the linesmen. (00:07:20)
No Easy Way - S1-E12
Other mistake: The same play-by-play commentator covers both the Nankatsu and the Meika matches, happening simultaneously in two different areas of Japan (and with no television coverage...of course, who does live commentary on elementary school matches anyway?).