Yesterday I've been playing ranked games a bit and I've noticed the following:
Whenever any of your team players drop out of the match, be it at the start, mid or at the end of the match, no replacement will be found and the match will not be postponed.
In one of the matches I've played yesterday this resulted in a 4 vs 3 from the beginning and the point outcome was 250 vs 31 with a lot of our team players being overrun constantly.
This is pretty lame and should be fixed.
(edit: typo's, title)