The most original outcome would be Gohan wins, and then Goku loses, of all things. A darker possibility is Gohan wins, Zen-Oh gets bored by the Universe 9 fighters' incompetence, ends the Exhibition match and destroys their universe. At which point everyone is speechless and goes back home to train for the Tournament of Power.
How is Goku losing an unusual outcome? I mean let's look at his track record in this series so far...
-VS Beerus: Lost. Twice.
-VS Freeza: Well he technically killed Freeza but only after
he had technically witnessed him win. And it was really Vegeta who actually defeated him in battle.
-VS Botamo or whatever his name was: Won.
-VS Frost: Lost, though Frost was admittedly cheating.
-VS Hit: Threw the match.
-VS Zamasu: HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA
let us never speak of that again.
...So strictly speaking, he's been on a fairly consistent losing streak throughout this entire series. At least for all the fights that actually count-- He has beaten some minor foes I guess.