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1.13 Before expansion?
The next planned content patch will contain a matching system for the battlegrounds that will attempt to pair up groups based on various factors, including organization. We fully expect it to help in the majority of games, but your opposition is not always guaranteed. I do think with the changes to the honor system the entire process will become a bit less stressful as far as winning/losing and the factors that contribute.
1.13 Before expansion?