Traceback (most recent call last):
  File "/var/www/tennisabstract/cgi-bin/tourney.cgi", line 1002, in <module>
    match_row, _, _ = make_match_row(sm, rdict, pdict, tlev)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/var/www/tennisabstract/cgi-bin/tourney.cgi", line 317, in make_match_row
    w2won = cxd((w2spw/w2sp) * 100, 1) + '%'
                 ~~~~~^~~~~
ZeroDivisionError: float division by zero