For every winner, there must be losers. Patch 7.1 has some very obvious losers, as Riot were very liberal with the nerf bat in reaction to some legitimate complaints from the player base. Bruisers and tanks alike got hit by nerfs ranging from the small to the extreme, with a few other champions getting caught in the crossfire, for good or for bad.
On the whole, though, the changes aren't terribly extreme. A few permanently banned champions might finally see the light of the day, while other remain untouched. Riot was clear that 7.1 is the first in a series of patches intended to clean up the mess that was introduced at the beginning of Season 7, so the dust is still far from clearing. If your least favorite champion didn't make the cut -- and spoiler alert, Yasuo is completely unchanged -- there's still time before the ranked season begins in earnest.