Should I Ban Master Yi?
I'm trapped in low ELO where Master Yi reigns supreme. No team I have is coordinated and the Yi always gets fed. Should I just ban him or buy him and play botlane (I can't jungle)?
I feel like there's nothing I can really do. I've gotten stomped by a fed Yi every time I've decided I wanted to play a champ that can't beat him alone, which is every champ barring like Vayne with a wall or Fiora.
Can CC him and/or pop him before it ends

simply out duel him. The best ones are xin, dari, and jax
This is a funky one. Your goal with yorick is to end the game before yi gets rolling.
How? SPLIT SPLIT SPLIT! You split all day, you never group you never TP gank. You keep shoving top until your hitting the nexus. Triforce+executioners calling+deadmans+thornmail and you can duel the YI EASILY! as long as you have your ult.