Video: Watch UFC champion Demetrious Johnson and Cub Swanson attempt to take down a Sumo wrestler

Taking down opponents inside an Ultimate Fighting Championship (UFC) Octagon might not seem all too hard for 5'3" Demetrious Johnson, but being pitted against a Sumo wrestling champion is an entirely different story.

UFC's Flyweight titleholder and pound-for-pound great, along with perennial Featherweight contender Cub Swanson, spent the better part of yesterday (via Bloody Elbow) getting acclimated with the sights and sounds that Saitama, Japan, has to offer.

While in Saitama -- the host city of TONIGHT'S (Sat., Sept. 26, 2015) UFC Fight Night 75 mixed martial arts (MMA) event -- "Mighty Mouse" and Swanson elected to try (and fail) to move a Japanese Sumo wrestler.

Check out their admirable effort in Swanson's Instagram video below:

Me and @mightymouse125 against a Sumo champion

A video posted by Cub Swanson (@cubswanson) on Sep 26, 2015 at 4:32am PDT

I bet Johnson was wishing he were just a little bit taller at that moment.

For more on the UFC Fight Night 75: "Barnett vs. Nelson" fight card click here.