Kyojin no Hoshi

The story is about Hyuma Hoshi, a promising young baseball pitcher who dreams of becoming a top star like his father Ittetsu Hoshi in the professional Japanese league. His father was once a 3rd baseman until he was injured in World War II and was forced to retire. The boy would join the ever popular Giants team, and soon he realized the difficulty of managing the high expectations. From the grueling training to battling the rival Mitsuru Hanagata on the Hanshin Tigers, he would have to take out his best pitching magic to step up to the challenge. (Source: Wikipedia)

Ashita no Joe

Joe, a teenage orphan in the slums of the Doya streets, meets Danpei, a homeless, alcoholic ex-boxing coach. Danpei, seeing Joe's boxing talent, decides to train him. When Joe is sent to a terrible juvenile home for petty crimes, he meets Rikiishi who becomes his boxing rival. Danpei arrives at the home to help Joe to train in order to defeat Rikiishi. When Joe decides to seriously pursue boxing, Danpei cannot get a coaching license because of his reputation as a drunk. (Source: AnimeNfo)

Otoko Ippiki Gaki Daishou

TV anime adaptation of Motomiya Hiroshi's manga "Otoko Ippiki Gaki Daishou" about young gang leader and all the trouble and fights his gang gets into, serialized in Weekly Shonen Jump. (Source: AniDB)

Hajime no Ippo: The Fighting!

Makunouchi Ippo has been bullied his entire life. Constantly running errands and being beaten up by his classmates, Ippo has always dreamed of changing himself, but never has the passion to act upon it. One day, in the midst of yet another bullying, Ippo is saved by Takamura Mamoru, who happens to be a boxer. Ippo faints from his injuries and is brought to the Kamogawa boxing gym to recover. As he regains consciousness, he is awed and amazed at his new surroundings in the gym, though lacks confidence to attempt anything. Takamura places a photo of Ippo's classmate on a punching bag and forces him to punch it. It is only then that Ippo feels something stir inside him and eventually asks Takamura to train him in boxing. Thinking that Ippo does not have what it takes, Takamura gives him a task deemed impossible and gives him a one week time limit. With a sudden desire to get stronger, for himself and his hard working mother, Ippo trains relentlessly to accomplish the task within the time limit. Thus Ippo's journey to the top of the boxing world begins.

Ace of the Diamond

With a stray pitch that completely missed the batter, Eijun Sawamura loses his final middle school baseball game. Frustrated by this defeat, Eijun and his teammates vow to reach the national tournament once they are in high school. But everything changes when a scout unexpectedly invites him to Tokyo's prestigious Seidou High School after seeing the potential in his unusual pitching style. Encouraged by his teammates, Eijun accepts the offer, ready to improve his skills and play at a much more competitive level of baseball. However, now surrounded by a large number of skilled players, Eijun struggles to find his place on the team. He declares that he will one day become the team's ace, but that's only if fellow first year Satoru Furuya doesn't take the title first, with his breakneck fastballs that earn him a coveted spot on the starting roster. With the addition of these talented new players to an already powerful lineup, the Seidou baseball team aims to become the best in Japan, facing off against a number of formidable foes that stand in their way. (Source: MAL Rewrite)

Harisu no Kaze

A boy known as a troublemaker transfers into a new school. (Source: AniDB)

Oblivion Battery

Iron-armed pitcher, Haruka Kiyomine, and the shrewd catcher, Kei Kaname, AKA the "Skilled General," were considered to be an unrivaled, monstrous battery duo in the middle-school baseball world. They were both scouted by various powerhouse high schools across the nation, but somehow, they both ended up at Tokyo Municipal Kotesashi High School, which wasn't known for baseball at all. On top of that, other star players who had lost to that duo in the past and completely strayed from baseball coincidentally also enrolled at that school, and… Their meeting sets everything into motion once again. Their high school baseball story begins now! (Source: Crunchyroll)

The Gutsy Frog

When Hiroshi was fighting against his rival Gorillaimo, he stumbled over a stone and fell on to a frog. To be surprised, the frog was still alive and it named itself Pyonkichi.

Captain (TV)

The original is an impressive sports manga featuring not heroes, but common boys, and the story depicts the growth of Sumiya 2 junior high school baseball team (the successive captains and players) in downtown Tokyo. Takao Taniguchi, who was a substitute player of the second team of Aoba Gakuin, a prestigious junior high school in the baseball world, but he transferred to Sumiya 2 and he became the captain of the baseball club. After steady training, the team try to do a final game in the regional preliminaries, against Aoba Gakuin.

Miracle Giants Dome-kun

Dome Shinjo, a 10-year-old boy who is son of a deceased legendary player of the Yomiuri Giants. From his father he inherited the love for baseball and his great abilities for such sport, although his mother and his older sister try to avoid that he practices it. In fact, his father, before dying, had time to teach him a magical shoot. Dome, after his mother gave him the glove his father used, he makes that shot in a training session of the Giants and is contracted immediately. With the support of the veteran players of the team, this young player will, from this very moment, make the Giants become unbeatable at home and none of the main batters of the Japanese professional league manages to end with his magical shot. Although that does not apply to the games played away, as Dome is just allowed to play at home, in the Tokyo Dome in which his father was consacrated (and the place by which he did chose such name for his son). When the veteran captain of the Dragons manages to bat his shot, it seems that the young boy is finally and definitely defeated, but then he invents another magical shot. New rivals, but also friends (such as Melody Norman, an American girl who disguises herself as a boy because women can't play baseball), will appear in scene, until the arrival of the mysterious Don Carlos, a Spanish ex-bullfighter who plays for the Hiroshima Toyo Carp and seems to have something pending with his father. Will Dome succeed in giving the league to the Giants? (Source: Wikipedia)

Ippatsu Kanta-kun

Kanta lives with his mother, brothers, sisters, and dog named Judeth. He likes baseball, but his mom doesn't like him mentioning baseball, because his mother believes this was the cause of her husband's death. Info from ANN