Dont expect to go on sick streaks playing 4v4 with randoms only.
My highest was 9 or 12 btw.
The frustrating part is that i think i am getting unlucky. I started off around rank 2000 and now have dropped to 10000. I feel like i have gotten better during that stretch of defeats too. I became more used to hotkeys, control groups, and paying attention to my units.