I'm going to predict what will probably be the last big battles of Best Wishes/Black and White.
Iris vs. Clair.
3 vs. 3
Axew vs. Kingdra. Kingdra wins.
Excadrill vs. Kingdra. Excadrill barely wins.
Excadrill vs. Dragonite. Dragonite wins
Dragonite vs. Dragonite. Iris's Dragonite barely wins but gets paralyzed by Dragonite's thunderbolt.
Dragonite vs. Shiny Druddigon. Shiny Druddigon wins easily.
Clair tells Iris to train more.
Ash vs Cilan. Farewell battle.
3 vs. 3
Stunfisk vs. Palpitoad. Palpitoad wins.
Crustle vs. Palpitoad. Crustle wins.
Crustle vs. Boldore. Tie
Pansage vs. Oshawott. Oshawott wins.
Ash vs. Iris Farewell Battle
4 vs. 4
Excadrill vs. Pikachu. Pikachu wins.
Emolga vs. Pikachu. Emolga wins with Attract and hidden power.
Emolga vs. Snivy. Snivy wins.
Dragonite vs. Snivy. Dragonite wins
Dragonite vs. Leavanny. Leavanny barely wins but gets burned by flamethrower.
Axew vs. Leavanny. Axew easily wins due to Leavanny's injuries.
Axew vs. Scraggy... double evolution.
Fraxure learns Dragon Claw and Scrafty learns Head Smash.
Fraxure vs. Scrafty. Tie collision between Dragon Claw and Head Smash.