The trusty old nine-panel grid can be used to achieve a huge array of effects.
Here, with no variation in panel shape of size, no change in type of shot, and no backgrounds, Jack Kirby forces us to concentrate on the dynamics of the two figures in motion.
(It's a shame that the colourist didn't get the point, changing colours with each panel and building to a deep red two panels before the end of the fight, with nowhere for the intensity to go but down.)
They’re fighting for Bahlactus, and the new bout of Friday Night Fights.
Fighting American “Poison Ivan” by Joe Simon and Jack Kirby, from Fighting American issue 3 Prize Group, October-November 1954, reprinted in Fighting American, Marvel Comics, 1989