Content-type: text/html

Traceback (most recent call last):
  File "/var/www/tennisabstract/cgi-bin/wtourney.cgi", line 990, in <module>
    second_won = percify((w2spw / (wsp - float(w1sp))), 1)
                          ~~~~~~^~~~~~~~~~~~~~~~~~~~~
ZeroDivisionError: float division by zero