Riot, please ban smurf accounts that lose on purpose so they can carry a duo higher for money.
There needs to be a better way. Several of my last games there were players that were intentionally throwing games to push their accounts lower to carry players up. This guy went AD Fizz and went 0/6 to start. He then picked up a couple of kills to look "respectable" but he intentionally lost and lost badly. He gave most of his deaths to one champion to make him fed. Riot should be able to ban players that lose 80% of their games for a period of time (2 weeks) then all of the sudden win 65% with a particular duo partner. Ban them from ranked.