HLStats strips automatically the following tags from player names:

$s_output =~ s/\[No.C-D\]//g;	# remove [No C-D] tag
$s_output =~ s/\[OLD.C-D\]//g;	# remove [OLD C-D] tag
$s_output =~ s/\[NOCL\]//g;		# remove [NOCL] tag
$s_output =~ s/\([0-9]\)//g;	# strip (1) and (2) from player names
This can be expanded if you know PERL RegEx.

So if you want to remove "fuck" from Player names use this:

$s_output =~ s/fuck//g;	# strip fuck from player names
Be carefull since a wrong RegEx can make Playernames goofy.

To modify those patterns you have to edit the HLstats_Player.pm file and search for g_option_strip_tags.

To disable this feature completly set the option STRIPTAGS to No in the HLStats options.