PSA: Hard Counters For Sated/Vayne
So Yi, Vayne and Thresh on enemy team...
They also had Ahri and Urgot.
We had Blitzcrank, Graves, Lee Sin, Fizz and Quinn top.
Honestly if your picks and knockbacks are stronger than the enemy team, Yi and Vayne aren't nearly as scary even when farmed.
Blitzcrank and Quinn in particular need to be a thing when countering top isn't strictly necessary, and Blitzcrank can easily outplay Thresh simply by locking him down with fist/silence before he gets tanky. The rest is skillshot fishing.