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Alex Rodriguez hits in the sixth inning of Wednesday's 4-0 Yankees spring loss. ((Paul Sancya/Associated Press))

Alex Rodriguez refused on Wednesday to address allegations by former major leaguer Jose Canseco, who claims he introduced the three-time American League most valuable player to a steroids dealer.

"It is over as far as I'm concerned," Rodriguez said after his New York Yankees lost 4-0 to the Philadelphia Phillies.

"No further comment on the matter. I'm just excited to be playing baseball."

In his book, Vindicated: Big Names, Big Liars, and the Battle to Save Baseball, Canseco claims he introduced Rodriguez to a steroids dealer named "Max."

Excerpts from the book, slated for publication on April 1, were posted on deadspin.com before being removed Wednesday.

Canseco wrote that Rodriguez approached him years ago and asked where "one" might acquire steroids.

During an interview to be broadcast Thursday on ABC's Nightline, Canseco said he won't produce evidence to back his claim.

"The timing's not right," Canseco said, according to excerpts released by ABC.

"Let's see how Alex reacts. Let's see if they all call me a liar again.

"How's that for you? Let's see if all of a sudden they're going to call me a liar again."

During the ABC interview, Canseco refused to identify Max.