Pitch is a Manga/Manhwa/Manhua in english language, Sports series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

17세. 자신이 선택한 무게를 지고 오른다. 거친 호흡, 쏟아지는 땀. 철주의 계절은, 1도 더 높다.