Andre Agassi’s upcoming autobiography, Open, available Nov. 9, contains the revelation that the eight-time Grand Slam champion used crystal meth in 1997 and lied to tennis authorities when he failed a drug test.

According to an excerpt of the autobiography posted online Tuesday, the eight-time Grand Slam champion writes that he sent a letter to the ATP tour to explain the positive test, saying he accidentally drank from a soda spiked with meth by his assistant “Slim.”

“Then I come to the central lie of the letter. I say that recently I drank accidentally from one of Slim’s spiked sodas, unwittingly ingesting his drugs. I ask for understanding and leniency and hastily sign it: Sincerely,” Agassi writes. “I feel ashamed, of course. I promise myself that this lie is the end of it. The ATP reviewed the case — and threw it out.”

In reality it was “Spike” who introduced the now-retired Agassi to the substance, dumping a small pile of powder on the coffee table, which both snorted:

“I snort some. I ease back on the couch and consider the Rubicon I’ve just crossed,” Agassi writes. “There is a moment of regret, followed by vast sadness. Then comes a tidal wave of euphoria that sweeps away every negative thought in my head. I’ve never felt so alive, so hopeful — and I’ve never felt such energy.”

“I’m seized by a desperate desire to clean. I go tearing around my house, cleaning it from top to bottom. I dust the furniture. I scour the tub. I make the beds.”