to validate them as valid email and not require them change:
$WAFV_Errors .= WAValidateEM((isset($_POST["player2_email"])?$_POST["player2_email"]:"") . "",true,10);
$WAFV_Errors .= WAValidateEM((isset($_POST["player3_email"])?$_POST["player3_email"]:"") . "",true,13);
$WAFV_Errors .= WAValidateEM((isset($_POST["player4_email"])?$_POST["player4_email"]:"") . "",true,16);
to;
$WAFV_Errors .= WAValidateEM((isset($_POST["player2_email"])?$_POST["player2_email"]:"") . "",false,10);
$WAFV_Errors .= WAValidateEM((isset($_POST["player3_email"])?$_POST["player3_email"]:"") . "",false,13);
$WAFV_Errors .= WAValidateEM((isset($_POST["player4_email"])?$_POST["player4_email"]:"") . "",false,16);