Honda Goro from Major.
This is a lesser known anime with baseball as its main topic. The anime brings you through the life of Goro from young to old.
The main reason is basically that no matter what life throws at him, he constantly face the challenges if life to achieve his dream, of becoming a baseball professional like his father. Through the lost of his father, the lost of his dominant arm and even when external forces strives to ensure that he can't continue his dreams, he continues pursuing his dreams and grow stronger through it holding on to his beliefs. To achieve his dreams, he would even take the hardest route to prove himself the best, rather fighting against the best and emerging the winner, than to fight among people that are in the same league as him