I think Ash will lose here and I want him to lose too... I dunno if it's confirmed how many pokemon are allowed in this battle but I think it'll be a 4v4 and he'll have his ass handed to him.
Here's what I want to see
-Ash's Riolu wins easily against Korrina's (newly caught, ik it's not confirmed) Galarian Farfetch'd and is recalled
-During the battle, the odds seem to be on Ash's side (we get to see Korrina's evolved Machamp and Mienshao)
-Korrina sends out Mega Lucario... Pikachu, Dragonite and Gengar put up a good fight but all get KO'd, leaving only Riolu (with it being clear it wont take much to finish off Mega Lucario)
-Riolu gets slaughtered (maybe OHKO?) and doesnt even land a hit, Ash loses
-The Kalos episode (whenever it happens) is about Ash searching for a Mega Ring and Lucarionite, but instead he gets a Mega Ring and later (in a much later episode) finds a Gengarite
-Ash and Korrina face off against eachother in the Hyper or Master Class (if it happened in the Hyper Class, it needs to be for the final Master Class spot)
-Ash's Mega Gengar loses against Mega Lucario, leaving Ash's regular Lucario against Mega Lucario... and Ash's Lucario wins
I feel like thatd be a satisfying battle tbh