def short_name_converter(team_id):
    """Converts a team's ID to their short name."""
    short_name_map = {(1): 'ARS', (2): 'AVL', (3): 'BOU', (4): 'BHA', (5):
        'BUR', (6): 'CHE', (7): 'CRY', (8): 'EVE', (9): 'LEI', (10): 'LIV',
        (11): 'MCI', (12): 'MUN', (13): 'NEW', (14): 'NOR', (15): 'SHU', (
        16): 'SOU', (17): 'TOT', (18): 'WAT', (19): 'WHU', (20): 'WOL',
        None: None}
    return short_name_map[team_id]
