Thought sports anime was all yelling and power moves until Haikyuu got me hooked at 31
My friend in Dallas kept pushing it for a year, and the 3rd set of the Aoba Johsai match where nobody does anything superhuman, they just refuse to let the ball drop, is the most tense thing I've seen in animation, so what other shows actually earn their hype like that?
The "nobody does anything superhuman" part is what got me too. That's what makes shows like this work, when the stakes come from effort and not from power levels. I had the same thing happen with Ping Pong the Animation and it's only 11 episodes, so no big time sink. The art style threw me at first but by the end I was all in on those kids. Keep going with Haikyuu too, season 2 and 3 crank the same feeling up even more.