why do i have a straight gold 5 in my plat 5 game?

Every day the matchmaking gets worse I swear LOL. he has 100 cs at 30 min gj :D

atleast he almost did as much damage as tank hecarim :> we still won cuz I carry but cmon rito why make it sooo annoying I just care that the kid acts like an ass more than anything. I knew he was gold 5 when he complained about not getting blue when 0-3 and 50 cs at 15 min and stole my red. Gold players just act like trash can douche bags so dont put them in my plat games thanks. His mmr is gold 5 dn why hes in the game.

fyi he has a 52% win rate so yes he belongs in gold 5 mmr lol was gold 5 last season as well...