A Canadian sports doctor whose high-profile clients have included Tiger Woods and Alex Rodriguez pleaded guilty in federal court Wednesday to bringing into the US unapproved drugs, including human growth hormone, that were used to treat professional athletes. Dr. Anthony Galea, a healing specialist from Toronto who was sought out by the biggest names in sports, was indicted by a federal grand jury in October on charges that he smuggled HGH and other substances into the US and lied to border agents.