Defense lawyers in the perjury trial of Roger Clemens portrayed a former steroid supplier to major league ballplayers as a liar and exaggerator whose testimony was not always consistent with his past statements and his own memoir.

Kirk Radomski, a former bat boy for the New York Mets who became a drug dealer to high-profile athletes, is a critical witness for federal prosecutors because they say some of the performance-enhancing drugs he sold were used by the pitching legend.

During cross-examination Wednesday, defense attorney Michael Attanasio pressed Radomski about how he belatedly discovered a shipping receipt addressed to Clemens’s former strength coach at the pitcher’s Texas home.

Attanasio read extensively in the courtroom from Radomski’s book, “Bases Loaded,” and tried to use his words against him.

In the book, Radomski writes that he hid the mailing receipt addressed to Brian McNamee under a heavy television because he was worried about getting caught.

“Your testimony is that it got there accidentally. You said something totally different in your book,” Attanasio said. “Is it a lie?”

“I didn’t hide nothing. Why would I hide it?” Radomski said in a thick Bronx accent.

He blamed his author, who interviewed Radomski for the book, for embellishing his recollections. The book’s cover is illustrated with a photo of a baseball glove clutching a bottle of pills.

Jurors also saw copies of checks that McNamee wrote to Radomski to pay for steroids and human growth hormone. Radomski said that McNamee never told him the names of ballplayers he was buying for.

“He was a cop. He knew what we were doing was wrong,” Radomski said of McNamee, who arrived at the District’s courthouse Wednesday, perhaps in preparation for taking the stand later in the day.

One day after U.S. District Judge Reggie Walton warned prosecutors and defense attorneys that their sluggish pace was often boring jurors, he dismissed one member of the panel for falling asleep during testimony and arriving late to the courthouse.

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