Exactly that's my question. I have created a post on this topic and admins aren't able to give any explanation about it. I think they also have no idea what's going on. Dotabuff showed me d1 (I didn't even calibrated) now it's increase to d2 if I keep winning I might get into immortal according to dotabuff let's see
It's an estimate rank based on the players in your matches. It will change depending on other players matched with you.
@libarty go play rank
It's just the hidden MMR. When you calibrate, they will add or subtract from that hidden MMR you have now. So simple
why got medal even dont play rank yet