If you're looking for manga similar to Kattobase! Dreamers: Carp Tanjou Monogatari, you might like these titles.
The manga focuses on Kiyohara, a player on the fictional baseball team Seibu Raianz (based on real-life team, the Seibu Lions). Many characters are based on professional baseball players and their teams (with altered names) appear in the manga.
After finishing high school in Nagano, "Rise Mart" supermarket employee Amano Miharu signs up for her company's former top-tier girls' softball team. But with their glory a mere memory and the team's direction changing hands, they're in rough shape and on the brink of a league demotion. Hoping to turn things around, the company has placed the team under the coaching of Ichijou Yukiteru, whose skills once took his team to Koushien. Working together, a team that once took softball lightly will gradually awaken their passion and aim to win the Japanese League!
Persistent mediocrity hasn't dissuaded Fukutsu Toshi, captain of a lame high school baseball team, from his love of the game. But when the principal, dissatisfied with their winless performances, threatens to take away their playing field, Toshi is forced into action to turn things around with all out effort. But facing him at every turn is endless adversity. Nothing is ever easy for him, but luckily, Toshi has the determination to beat it all.