4v5 on ranked shouldn't count.
I just played a ranked match, and lost because the blitzcrank on my team disconnected or quit. Then as the game went on trying to win, the Corki on my team quit, so at that point, we had no chance. The match shouldn't count when you are missing people from your team, it ruins ranked games, because you lose so much points from one loss. and sorry if there have been posts about this already.