def add_team_position_column(df):
    """Add 'team_position' column to DataFrame."""
    tp_pat = r'\w{2,3}\s-\s[A-Z,]+'
    tp_sr = df['player'].str.findall(tp_pat)
    tp_lst = [tp[0] for tp in tp_sr]
    df.insert(1, 'team_position', tp_lst)
    return df