Eyeshield 21, Tennis no Ouji-sama Recommendations
Both series are sports series about an extremely talented young student who joins a school sports team and quickly becomes an integral part of its primary lineup. Both series deal with the dichotomy of talent born from hard work versus inborn genius; they also both have the ongoing motivation of senior students having their last chance at a substantial tournament win.
Tennis and Football.
Both talk about working hard to be the best
Both have a lot of chapters
both fun to read
Fun to Marathon.
Sport mangas with oposite main characters. While in eyeshield is a total loser that step by step gets better, in PoT the main char. is a total genius who get his school to the top (obviously with the help of his friends).