Hungry Heart : Wild Striker is the best sports anime I have seen so far. Maybe the best anime I have seen too.
SPOILERS AHEAD
It's not the typical sports anime, however. It's the first time I have seen the main character's team lose so many times, and lose the last match of the series.
Hungry Heart has a very great cast of characters, including the main team, rivals, and supporting characters. Side stories are developed fine, so is the main character's background. I'm talking about Kyosuke Kanou.
Kanou is a very tempered striker, always in the shadow of his brother, a former player in the european league. The story focuses on his develop as a player and as a person, with some romance, and the discover of his past.
There's a little of romance, a lot of comedy, and a very motivational feeling. The ost is great, so are the openings and endings.
The animation is great so far, thus in some early chapters it's different from the later ones, as if it were done by other studio. This is the only reason the Art is valued in 9. After that, the matchs are animated greatly. The last chapter's match is amazing.
Hungry Heart really deserves 10 points overall. It's really fun and motivational.