Consistently entering BGs late

Not sure if this is a bug or if it belongs here, but I am constantly entering BGs at the very tail end, literally seconds before the game is over. I have only twice entered BGs when the game is a third to halfway over. Just to give an idea of how many times this has happened, I have accumulated about 7000 honor so far XD (so, about 300-500 honor per match). Anybody know what's going on? Or if I can somehow tell if it's a fresh battleground before joining?

I'm fairly sure this is just RNG, like someone leaving just before their team loses the game, and you getting their spot. I've had this a few times!

There's no way of knowing if there's a fresh BG or not unless you ask another player or use two or more clients.