Originally Posted by Aringhe
Rush him. When he uses his Q, he is literally down on damage before ~level 14. Build a tiny bit of sustain from Catalyst or Chalice of Harmony, get HP potions, then nuke the living hell out of him and make him pop his heal. He won't engage for another 30 seconds, I can promise you that.
In teamfights, all yi has to do is initiate and then heal until his team has your team to low hp. if you try to nuke him that gives plenty of time for the other team to focus the adc or any other dmg that your team has. A tank cant just take all the dmg for your team because yi has to be nuked. without aoe dmg, focusing and nuking yi will only cause the rest of your team to be preoccupied. if you dont try to nuke him in order to make him heal, he will just kick the **** out of your team with his alpha strike and then run away until he no longer has to worry about healing.
but i understand shutting him down and ganking early.
thanks for the help so far.