I haven't played much yet but here it is some early feedback.
I encountered some situations when I couldn't find easily the ball. In the situation below I was not sure who had the ball. Maybe marking in a different color the tile with the ball will do.
Also, the IA performs actions too fast and it was hard for me to follow. I would add some messages on screen for each event: Tackle! Shoot! It failed! etc. Games like Pokemon have text windows during combat explaining what's going on.