General DiscussionHow can I see if I've ever played with a professional?

Usually with dotabuff +

but i can tell you, you have never been playing with or against a pro player.

you go on their profiles and you should see something like this (if you have db+ ofc)

I can assure you that you have never ended up randomly been in match with a professional with stats like that. However it is still possible if, the professional is smurfing or stacking. A professional has a blue tick or something it was next to their name.