NEW YORK(AP) In response to an admission in Andre Agassi's upcoming autobiography that he used crystal meth in 1997, the International Tennis Federation says it is ``surprised and disappointed.''

According to an excerpt of the book published Wednesday in The Times of London, Agassi says he failed a drug test, a result thrown out after he lied by saying he ``unwittingly'' took crystal meth.

ITF president Francesco Ricci Bitti says ``Such comments in no way reflect the fact that the tennis anti-doping program is currently regarded as one of the most rigorous and comprehensive anti-doping programs in sport.''

He added that the drug use occurred before the World Anti-Doping Agency was founded in 1999, when anti-doping in tennis was managed by individual governing bodies.