These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Arc Fatigue: The game against Inashiro Tech is several volumes long. It's made even worse when after all the tension build-up, they lose cuz they blew the save. It's not as bad in the anime, lasting more or less ten episodes; which is only about twice as long as the other games, which average around 4-6 episodes. You still get the heartbreak when Seido loses, but it's still nowhere near as long and upsetting as in the manga.
Bishonen Jump Syndrome: The character design certainly evokes this, especially compared to the other sports anime that aired in the same season, Yowamushi Pedal. However, in comparison in other sports animes, it isn't much.
You'd be pressed to find someone who doesn't like Chris Yuu Takigawa. A good portion of the fandom calls him Chris-senpai not just because that's how Eijun calls Chris, but simply out of respect for him.
Eijun is usually energetic and cheerful, but when he takes a hit, he takes it hard, and it's nearly impossible not to feel sorry for him. Two examples in particular would be: when Raichi hits a home run out of his pitch, and when he accidently hits Shirakawa in the head during the Inashiro game, which later causes him to develop Yips.
Furuya. Before joining Seido, his teammates refused to play with him because he was too strong, leading him to train all by himself.