Tranquil is confirmed to face Swanna(Which I believe a summary said it was Skyla's ace and is probably the last battle), so it's not losing to Unfezant. As such, Tranquil will be getting a win here most likely, as Tranquil vs Swanna is the final battle and Ash is already moving on to the next gym in the next episode.
Also, it's highly likely Tranquil gets recalled in the Unfezant battle, for Pikachu.
All based on the summaries.
Pikachu's lost against Panpour wasn't bad at all, it was done perfectly well to give it a reasonable lost.
Swanna vs Tranquil is the final battle as a summary states I believe.
I say it should and will go as follow:
Tranquil vs Unfezant-Tranquil recalled(Highly likely based on a summary).
Pikachu vs Unfezant-Pikachu wins. There's no reason to give Unfezant more attention then Skyla's Swanna who is her ace, it should just end here. Pikachu is confirmed to be switched in after Tranquil gets recalled.
Pikachu vs Swoobat-Pikachu loses as it's tired.
Krokorok vs Swoobat-Swoobat wins, Krokorok does good but loses it's sunglasses which causing it the battle. The battle is already confirmed, and personally, I think it's best for it to lose, people complain about lack of development and here is the perfect Pokemon to get develop, and I see so many people wanting and expecting it to win, that's not going to develop it properly. Krokorok should lose, so it can get stronger later on, plus it makes the gym more intense as Ash now only has an exhausted Tranquill to battle with, someone who didn't already he would win would be on the fence most likely.
Tranquill vs Swoobat-Thanks to Krokorok weakening Swoobat, Tranquill gets the win, but is exhausted.
Tranquill vs Swanna-Tranquill is barely holding on. After some words are said by Skyla and Ash, it evolves.
Unfezant vs Swanna-Unfezant gets Roost so it can get back some strength(Or I suppose evolving can just give it full health again, but I feel Roost is the better option plus it's something new to debut to the show). Unfezant wins after a tough battle.
Pikachu gets a win(It's not a bad thing people). Krokorok loses(It's not a bad thing as it lead to development, you'll be getting what some of you've been complaining about, losing isn't a bad thing sometimes). Tranquil gets a win(So it has a win as one and people wont complain). Unfezant gets a win(Gives it it's time to shine after not getting much attention through out the series). In the end, this way everyone wins(Aside from the haters who wants one of the Pokemon dead), Pikachu, Tranquil, and Unfezant gets actual wins, and Krokorok gets his focus on his issue leading to development leading to it becoming even stronger.




















Leaf Green:
Diamond:

Platinum:

White:



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