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)

One Outs

The story begins when Hiromichi Kojima, the star batter of the fictional Lycaons in Japan's Pacific League, heads to the southern Japanese island of Okinawa to train and bring himself out of a slump. There, he meets Toua Tokuchi, a 134-kmph (83 miles per hour) pitcher and the undisputed king of a gambling form of baseball called "One Out." At Kojima's urging, Tokuchi signs up with the Lycaons under an unusual contract: he gets 5,000,000 yen (about US$46,000) for every out he pitches, but loses 50,000,000 yen (US$460,000) for every point he gives up. (Source: Anime News Network)

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)