American tennis player Wayne Odesnik was banned  for 15 years after a second doping violation, a sanction that essentially ends his career.

The International Tennis Federation said the 29-year-old Odesnik tested positive for several banned substances, including steroids, during tests in December and January.

The ban was back-dated to Jan. 30 and will run until Jan. 29, 2030.

Odesnik was first sanctioned in 2010 for the possession of human growth hormone. Odesnik was off the ATP Tour from April 2010 to August 2011 after pleading guilty in Australia to importing HGH. He denied using the drug, and repeatedly said he never tested positive.

The ITF originally banned him for two years, but cut the penalty in half, saying he cooperated with investigators. Andy Murray and other players later criticized Odesnik, wondering aloud in what way the American might have cooperated with doping authorities.