Rookies will be tested four times a season on a random basis.

The draw up to and including the semi-finals were made on a random basis.

He said: 'In the past a great deal of training has been done on an almost random basis.

A hospital will test doctors for drug and alchohol use on a random basis.

Under the new rules, four million transportation workers must eventually be tested, on a random basis.

In addition to the social sites, the agency's blog page could appear on a random basis.

For that reason some checks are made on a random basis.

Rookies are tested on a random basis four times during the season.

The chance of this happening on a random basis is very small.

Which was encouraging, for most of the department had no connection with crime except on a random basis.