So this seams fair...
I already made a post similar to this somewhere else - but I feel this needs it's own thread (the post was 11/23/15 (or 24 depending on when riot says it's the next day) at roughly 11:30 - I'm not sure if they smurfs involved have or have not played games since then.
http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2018543925/51452032?tab=overview
From top to bottom of the Enemy team:
: Played a total of 5 games (ranked or otherwise - heck it doesn't even look like he ever played co-op vs AI) All 5 of them today won 3 of them pretty much carried in one of the two games that he didn't win in (probably not enough smurfs...)
: First off offensive name... second off played a total of 5 games (ranked or otherwise and again doesn't look like he played co-op vs AI) all 5 or them today, conveniently won and lost the same games, in the both of the games he lost he had a really high k/d/a despite the loss
Played a total of 3 games (ranked or otherwise - again doesn't even look like he ever played co-op vs AI) all 3 of them today, in 2 of them he carried hard
Played 1 whole game ever...
A bit more reasonable of a profile - but still more wins than losses...
THIS IS BS! I should not be fighting an entire smurf team and be punished because literally the whole team was a bunch of smurfs - Riot please IP AND account ban at least the top 4 (I think the thresh just ended up on a team that happened to have 4 smurfs on it) I know that smurfing isn't a bannable offence - but it should be when an entire team can just say 'Hey guess what we are all pros just trying to be jerks because we will not be punished for it one bit'
Edit: After looking at his match history I'm fairly sure
was intentionally feeding on our team, ... same thing with 
... making an account so you can destroy people you shouldn't be anywhere near should come at some cost - I'm sorry but it should
Seriously why is having a whole team be made of smurfs not punished in any way (Honestly I feel like you should have to be level 30 for at least 30 days to before playing a ranked game to at least slow the influx of smurfs - I shouldn't have 7 people who are almost certainly smurfs in a single game..)