Zed and Yasuo almost 60% ban rate, all the time. Either do something about those 2 pretty broken champions or add more ban slots.
Zed has no mana can spam skills all day long, but the biggest problem is his free turret diving and switching places with his shadow, mainly the switches occur way to fast and the range he can get away from his shadow and still switch is way to long.
Yasuo main problem is the damn wind wall, he can play like crap on lane but then brake whole teamfight with just one wind wall.
So yea either do something with them or just add more ban slots.