def _parse_opponent_abbr(self, game_data):
opponent = game_data('<STR_LIT>')<EOL>opponent = re.sub(r'<STR_LIT>', '<STR_LIT>', str(opponent))<EOL>opponent = re.sub(r'<STR_LIT>', '<STR_LIT>', opponent)<EOL>setattr(self, '<STR_LIT>', opponent)<EOL>
Parses the opponent's abbreviation for the game.

The opponent's 3-letter abbreviation is embedded within the HTML tag
and needs a special parsing scheme in order to be extracted.

Parameters
----------
game_data : PyQuery object
    A PyQuery object containing the information specific to a game.