When playing random 2v2, can you be paired with a pre-arranged team?
When you're playing "random 2v2" (random partner, not race), can you be paired against a team of two players that are in a pre-arranged team and not randomly assigned?
Yes. I have played many games as a prearranged team and we have been paired vs people who know each other as well as people who do not.
I believe so, as I've played against people that were randomly assigned to each other in my 2v2 matches (where my team was with a friend).