A decent niche/hobby anime about rock climbing for four episodes before it becomes a cliché, cookie cutter sports anime.
A surprisingly decent (not necessarily good) sports/shonen of water polo / butt wrestling, naturally in a heavily ecchi environment. Not worth much past the novelty of the gag premise, scratches a shonen/battle itch more than an ecchi itch.
How Heavy Are the Dumbbells You Lift?
A surprisingly funny, smart, and effective "edutainment" piece to get you excited about hitting the gym.
A short one-off art piece from Masaaki Yuasa that focuses on distinct animation to tell the story, rather than dialogue. Short enough that it's definitely worth checking out, even if the style is vastly different from typical anime fare.
Girls und Panzer: der Film
While it's literally the same plot as the series, the action and animation are improved (though some action is as believable as a Fast and Furious movie). It has a vibe of watching an eSports match, just with very Moe anime girls.
Girls und Panzer
A feel-good sports anime starring cute girls in tanks. It feels like a war tactics game, like Valkyria Chronicles or somesuch. I enjoyed this more than I anticipated.
Yuri!!! On Ice
A solid BL sports anime with very good character growth and some gorgeous performances.