i'm in your conscience
Off the top of my head, I barely won against Lenora in my Challenge Bowl run. I had a Smeargle, Phanpy, and Timburr. I only had Timburr left and in this challenge, you can only use a max of 3 items in gym battles and you can't save in front of leaders, as that counts as your score (like seasons in American football). So I had used all my 3 items and LUCKILY she used some status move and I was able to Low Kick her Watchog away, with like 1 HP left haha. Most miraculous moment ever for me, as far as I remember.