You should just play ranked and add the people you play everytime.. And ask to spec a game, they usually gobble gobble if you just lost vs them ^
I posted in the spec thread twice without reaction so I did it that way..
Btw I did not know it was possible to do it in adventure... Thought it was casual or ranked play

Anyway if you still need to spec someone on EU you can add me, prolly will play some more today or worst case scenario tomorrow..
Cant ensure a first game win though

My tag is in the 'watch and learn thread'