well it does not only happens to you.
http://prntscr.com/pi9q2x
I dropped for this from 1 to 7!
I never claimed that it happens only to me, whole mechanic of matchmaking is unfair. I had 11 matches in a row yesterday which was Saturday against top 200 opponents; with top 1000 teammates. From 125 rank OKW; I dropped to to 800...I have every single replay if you dont believe. I only wish I could carry my low rank teammates against top players.