Leavers/AFKers.
So my buddy leaves an ARAM because his BABY is throwing a tantrum. One game out of so very many and he IMMEDIATELY gets thrown into a low priority queue? It's a fucking ARAM. Not a ranked match. And he doesn't do it consistently. So explain to me the logic these idiots at Riot are using when they do that to people?
P.S.: Don't respond "assuming" you know this guy. He's not a habitual leaves and he apologized. Infants > LoL.