User blog comment:Asylumking/Who makes you salty?/@comment-24896347-20150227103313/@comment-24340503-20150228102814

As a Yi main, you basically have to either:

A) Outpressure me by picking a high-pressure jungler like Rengar who can snowball all the lanes in his favor before you can even do anything

B) Pick a heavy counterjungler (Nunu, Reksai) or Junglekiller (Jarvan, Lee, etc) and ruin my day personally.

Yi's core items are Devourer-Bork-Ghostblade. You usually shouldn't try to 1v1 after that unless you have backup.