@staticmethod
def matches_share_opponents(match1, match2):
    """Check matches for shared opponents.

        @param match1: The first match
        @type match1: tuple
        @param match2: The second match
        @type match2: tuple
        @return: Whether the first and second matches share an opponent
        @rtype: bool
        """
    match1_1, match1_2 = match1
    return match1_1 in match2 or match1_2 in match2
