Other mistake: Jun's parents can't see the kids by the goal, only their shadows, but they are positively unfazed when Tsubasa is celebrated loudly and dangerously acting as substitute for him (which is the reason why Tsubasa is replacing Jun in the celebration to begin with).
Other mistake: In the previous episode it was established that the final takes place the day after the semifinals. The kids went right away to the hospital and talked about the match against Musashi, wearing normal clothes, and had a night adventure searching the town left and right. In this episode another day passes by before the final.
Other mistake: The Musashi team are ready for the kick off. But the aerial view shows the teams in positions incompatible with the situation; not every player is in their own half, and even more noticeably, there are no players by the center mark, in fact nowhere near. (00:03:05)
Other mistake: While he waits for Tsubasa to lose the two defenders marking him, you can see that two Musashi players are coming at Misaki from behind. They are gone in the rest of the scene, to the point that he turns around and brings the ball back outside the area unchallenged. (00:09:20)
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)