Before that, veteran players were tested only once per year, during pre-season.
Williams has been tested only once in the last two weeks, in a three-set quarterfinal against Svetlana Kuznetsova.
His loyalty to Preston was tested only once, on the famous occasion when Palermo of Serie A came in for him with an offer of £10,000 for two seasons.
"Come on, who's fooling who?" Don Catlin, a former director of the U.C.L.A. Olympic Analytical Laboratory, said: "It doesn't take much for an athlete to figure out that there are ways around being tested only once a year.
McClaren pointed to the fact that Newcastle were down to 10 men for most of the match after Daryl Janmaat's senseless sending off, and said the game was "even" until that point, but the fact is, Lukasz Fabianski was tested only once.
Federer revealed before his return to action from knee surgery here at the Miami Open that, when residing in Dubai where he owns a property and spends about two months a year, he has been tested only once in the past 10 years.
Using this parameter ensures constraint 6 is tested only once for each pair of requests.
Thus, information that was tested twice was not remembered better on a later quiz, compared to information that was tested only once.
Half of the words were tested after a short delay (i.e., 1 day, T1) and again after a long delay (i.e., 1 week, T12), whereas the other half were tested only once after the long delay (T2).
Data collected from a second group that were tested only once at 90 days of age, suggested that the observed adverse Tat effects for males and females early in development were maintained with age.
