When you click the 'Practice' button it shows the screen below to select how many ships: 1v0, 1v1, 2v1 or 2v2 (below).
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After you hit start though it searches for existing matches of that size.
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If its going to search for existing practice matches though, I don't really care what size match it is and would like to see that first. I would rather it changed so that when you hit the 'Practice' button it shows you a match list but with only practice matches showing. You could also have 'Create New 1v0 Match' etc. in the match list in this list.