The Replacements - Season 1 Episode 12: Best Friends For-Never?

Riley and Tasumi get into an argument, so they decide to settle their differences in a wrestling match. Quick scene of Riley punching a slab of meat during a training montage.

Phineas and Ferb - Season 4 Episode 9: Great Balls of Water

Candace is afraid that her life may be too boring. Quick scene in a musical number.

King of the Hill - Season 7 Episode 11: Boxing Luanne

Luanne becomes a boxer. At first she is given jobbers, but then takes on Freeda Foreman in a real fight. Matches throughout the entire episode. One of the best examples.

Bee and Puppycat - Episode 6: Toast Dogs, Wedding Donut

Cass's old pro-wrestling rival Toast comes to challenge her. She only wears gloves and the two wrestle somewhat.

Mighty Magiswords - Minisode Episode 14: Too Many Warriors

https://www.youtube.com/watch?v=uVDgz24LDfQ

Vambre and Prohyas are on a mission to stop a boxing octopus. Vambre only wears gloves in a quick segment.

Littlest Pet Shop - Season 2 Episode 5: Pawlm Reading

A "pet psychic" gives wrong predictions about the pets' personalities, including panda Penny Ling being tough. She tries hitting a punching bag, but wants no part of it.

Teenage Mutant Ninja Turtles (2003) - Season 3 Episode 2: Space Invaders Part 1

April O'Neil hits the punching bag.

Thanks to Blogger user smack talk for finding this.

DC Super Hero Girls - Season 2 Episode 5: Hero of the Month: Harley Quinn

https://www.youtube.com/watch?v=ZOUa8AyGI-4

Some bag work by Batgirl.

Harley's Little Black Book #5

In an homage/follow-up to Superman vs. Muhammad Ali, Harley Quinn is chosen to fight the Man of Steel.

The New Mr. Peabody and Sherman Show - Season 1 Episode 5: New Sponsor / Cleopatra

Mr. Peabody has to try to get Mark Antony to fall in love with and marry Cleopatra so she can overthrow her brother Ptolemy as ruler of Egypt, but she is too much of a tomboy warrior woman. Mr. Peabody comes up with the plan of having her work out her pent up aggression in the boxing ring. Only has Cleopatra working 'pads' until she's tired.