@property<EOL><INDENT>def opponent_rank(self):<DEDENT>
rank = re.findall(r'<STR_LIT>', self._opponent_name)<EOL>if len(rank) > <NUM_LIT:0>:<EOL><INDENT>return int(rank[<NUM_LIT:0>])<EOL><DEDENT>return None<EOL>
Returns a ``string`` of the opponent's rank when the game was played
and None if the team was unranked.