The circumstantial evidence against Tiger Woods has scandal written all over it. But Tiger risking scandal would make no sense to his former swing coach.

GolfDigest.com reported that a new book about disgraced New York Yankees slugger Alex Rodriguez's use of performance-enhancing drugs includes a side note about Tiger Woods' increased reliance on controversial Canadian doctor Anthony Galea when Woods was recovering from a knee injury in 2009.

Galea was A-Rod's doctor for a period, but the book says he also regularly examined Woods following in ACL surgery in 2008.

According to GolfDigest.com, "Although previous reports had Galea treating Woods just four or five times as he recovered from his 2008 knee surgery, the book, 'Blood Sport: Alex Rodriguez, Biogenesis and the Quest to End Baseball's Steroid Era,' said Galea visited Woods at his Florida home 14 times between January and August 2009 for a charge to Woods of $76,012. In addition, the book, citing a Florida Department of Health Investigation, said Galea's associate and fellow Canadian, Dr. Mark Lindsay, visited Woods 49 times between September 2008 and October 2009 for a charge of $118,979. Both doctors, authors Tim Elfrink and Gus Garcia-Roberts write in Blood Sport, also treated Rodriguez."

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GolfDigest.com adds that Woods and Galea both insist that Galea's involvement in Woods' treatment dealt only with platelet-rich plasma injections, which are not illegal.

But Galea's past includes links to human growth hormone, GolfDigest.com added.

"His executive assistant was detained at the Canadian border in September 2009 while trying to bring unmarked HGH into the U.S., and Galea later pleaded guilty to a reduced charge of bringing into the United States unapproved drugs," the website reports.

Hank Haney, who was Woods' swing coach at the time, was quoted in the book as saying he wasn't sure of the specifics of the medical treatment Galea was administering to Woods. Haney told Golf Digest he can't think of a reason for Woods to use PEDs.

"I was there three or four of the times Anthony Galea was there, and I didn't see anything," Haney said to Golf Digest. "I can only talk about what I saw. I never saw Tiger do anything like that. Even if he did, I'm not sure how it would help him. He's bigger and stronger from all the working out he does, but he's not faster or longer because of it. And it's not like he's avoiding injuries."