From Season 2 (Natsu no taikai-hen) episode 1. When Tajima, Mihashi, Hamada and Izumi are having lunch in the classroom, we first see Tajima holding his chopsticks in his left hand.
This is, of course, because he injured his right fingers in the last inning of the Tosei game. A few seconds later he gets up to talk to Shinooka, then gets back to eating. But this time his chopsticks have shifted to his right hand:
Either someone on the animation team wasn’t paying attention to the story continuity or the mistake come from the manga. …It wouldn’t take long to check… Nope, it’s not from the manga. Just an animator that didn’t pay attention to story continuity, happens all the time.
