Best bans for each tier - May 16 patch 5.9

Hello!

Some of you remember a [post](http://www.reddit.com/r/summonerschool/comments/34o9ib/my_opinion_on_best_bans_for_current_meta/) I made a couple weeks ago where I talked about the champions that are the "best" to ban. I'm back!

The idea is I look at ranked games data from each tier (bronze-diamond) and through using a function that combines Pick%, Ban% & Win% I mathemagitize a number which indicates how good a champion is to ban.

The spreadsheet which contains the data is [here](https://docs.google.com/spreadsheets/d/1E6mXeOjeY4ULrBHd08OMnw-tuspX80y5VRdAGcdWYHw/edit#gid=1313668653) (on sheet #9, sheet 8 contained the raw data I took from http://www.leagueofgraphs.com and the other sheets were my previous shabbier efforts)

It looks like Leona has been doing very well in the lower tiers lately! At the other end of things up in diamond it looks like Gragas has dethroned Sejuani as the most imba ban him or else jungler. Janna lost a lot of ground as a top tier banworthy champion, but Jinx on the other hand is still a very strong ban (in all tiers).

Tell me if you can't sort the list by tier. I'm not sure if only I can do that or if viewers can too.

Well, I guess I don't have much else to say. Until next time :3

TLDR Top 6 bans by tier:

Bronze: Katarina, Sejuani, Leona, Jinx, Blitzcrank, Amumu

Silver: Katarina, Sejuani, Jinx, Leona, Amumu, Ahri

Gold: Sejuani, Katarina, Jinx, Gragas, Ahri, Riven

Platinum: Gragas, Sejuani, Jinx, Riven, Katarina, Ahri

Diamond: Gragas, Riven, Hecarim, Jinx, Nunu, Kalista

But be sure to say who you are banning and wait a few seconds in case one of your allies wants to play that champ!