Actually, there was a story where Superman and Lex Luthor have a fist fight. (Now this is back from 1968, so please don't lambaste me if my memory is a bit fuzzy, lol)
Luthor interrupted world communication (right in the middle of Gunsmoke) to challenge the man of steel to a fair fight. Basically he said Superman was a gutless old geezer. (He used the 'P' word too.) ("Pansey".)
So Superman builds a spaceship to take them to a red sun planet...(pffft, Superman not only has to have his butt kicked, he has to even build a ship to transport them there.
) And this ship, while it looks really dorky (about the same proportions as a whiskey still) is really efficiant and whisks them out trillions of light years, beyond the quasars and pulsars even.
So, they end up in a vast desert and start to duke it out.
And Luthor uses all his pent up energy and gives the man of steel a couple upside the head.>
Gave him a black eye he did.
Superman though, gives him one to the gut and another upon the chin. Let's face it, they can't just leave Superman there with his butt kicked.
Luthor runs off and wouldn't you know it tries to mow down Mr. Kent with a giant boulder.
Later they encounter a civilization that is at about the same level as the Ancient Roman Empire and get into some gladiatorial games, blah, blah, blah.
Thx