ITF’s anti-doping program is adequate

David Howman expresses his opinion about point of view about anti-doping programs in certain sports organizations. While the director general of the WADA is happy with jobs of certain sports organizations, he claims that anti-doping programs in other leagues/teams are not suitable.
For example, the director general of the WADA praises the International Tennis Federation (ITF) for its anti-doping system. David Howman claims that anti-doping system is proper in tennis.
But as for the National Basketball Association (NBA), it doesn’t agree to adopt its anti-doping policy to that of the WADA. It refuses to add some new drug tests in order to catch those that apply steroids and/or other prohibited preparations. That’s why David Howman claims that the anti-doping program of the NBA is not good enough to detect those who dope. He confirms that the NBA should add more sophisticated new methods as well.
David Howman says that drug tests conducted in tennis have high quality. But there is a defect in tennis’ anti-doping policy. Many tests are conducted during competitions. But few tests take place out-of-competition. That’s why ITF’s anti-doping system is also criticized.
Undoubtedly, nobody can confirm that anti-doping program of ITF is perfect. It has some lacks too. But it is quite adequate.
Thus, you should not think that tennis is clean from doping totally. Several tennis players are likely to administer steroids and/or related medicines. But it is not so tainted, as some other sports.
 Only one tennis player was banned for usage of forbidden medications. Although it seems to prove that tennis is clean, it is important to take in consideration that there are some ways to avoid positives. As you probably know, the American cyclist Lance Armstrong applied steroids and other related preparations and avoided detection much time. Couldn’t tennis players act the same way?