Disney’s Hercules: The Animated Series - Season 1, Episode 3: Hercules and the Secret Weapon

 

A short sequence featuring Athena and Ares in a boxing match with Athena getting punched.

B&V Friends Comics Double Digest #252

In the story "Punch and Beauty", Betty and Veronica sign up for a charity "Pillow Puff" boxing match. Short fight.

Being Ian - Season 2, Episode 35: Million Dollar Sandy

Ian and Tyrone convince Sandi to join the school boxing team, but the principal doesn't let her because she's a girl, so they disguise her as a boy. A montage of one-sided fights. She gives up in the final match.

Magnum Lily

https://pocket.shonenmagazine.com/episode/13932016480029189267

A new weekly manga about a high school girl who trains to become a boxer. Only in Japanese.

Hey Arnold! - Season 3, Episode 4b: Helga vs. Big Patty

Helga has a nightmare about fighting Patty. Ends with a POV punch by Patty.

Braceface - Season3, Episode 19: A Dog's Life

A couple of scenes with Maria doing kickboxing practice.

Daredevil/Echo: Parts Of A Hole or Daredevil - Vol. 2 #9

Features Echo in a one-sided, mixed boxing match.

Camp Camp

The opening theme features Nikki boxing.

OK K.O.! Let's Be Heroes - Season 1, Episode 29: No More Pow Cards

Judy shows off her skills in an intro.

Catwoman - Vol. 3 #20

Selina takes Holly Robinson to train with Ted Grant aka Wildcat.

Catwoman - Vol. 2 #93

Selina Kyle spars with a bigger male opponent. One-sided beatdown.

OK K.O.! Let's Be Heroes - Season 1, Episode 23: Second First Date

A flashback features young Judy.

OK K.O.! Let's Be Heroes - Season 1, Episode 22: Plaza Prom

A quick glimpse of Judy's blog.

OK K.O.! Let's Be Heroes - Season 1, Episode 21: You Have to Care

Elodie visits Lakewood Plaza to connect with the little people.

NEW GAME!! - Episode 6: Wow... It's So Amazing..

http://www.crunchyroll.com/new-game/episode-6-wow-its-so-amazing-742161

Hajime does some boxing for motion capture for a video game character.

Gintama - Season 1, Episode 106: Love Is Often Played Out In Sudden Death

http://www.crunchyroll.com/gintama/episode-106-love-is-often-played-out-in-sudden-death-510274

Otae comes to a soccer match thinking it's muay thai.

Gintama - Season 1, Episode 27: Some Things Can’t Be Cut with a Sword

http://www.crunchyroll.com/gintama/episode-27-some-things-cant-be-cut-with-a-sword-510090

Pop star Otsuu has a short stint as a fighter. Quick scene.

Senki Zesshou Symphogear - Season 1, Episode 5: From the Bottom of a Dark Abyss

Hibiki does some boxing training.

OK K.O.! Let's Be Heroes - Season 1, Episode 11: You Get Me

An appearance by Punching Judy and Carol on the bag.

Cannonball Fist

http://cannonballfist.com/?page_id=171

"Cannonball Fist is a comic about Clara “Cannonball” Jayne, a young boxer who comes to Southpaw City seeking to become the world’s greatest fighter. She fights monsters and it’s a good time."

Hasn't been updated since 2015.

Doug - Season 4, Episode 7b: Doug Clobbers Patti

Doug accidentally knocks out Patti in a fantasy sequence.