In April 2001, Guillermo Coria tested positive for nandrolone at the tournament in Barcelona . This meant a seven-month ban and a £ 65,000 fine, plus he lost world ranking points.
According to the then 19-year-old Argentinian, a product from the US food manufacturer Universal Nutrition should have contained nandrolone and other prohibited substances ( steroids ), which led to a falsification of the doping test. After an independent laboratory confirmed this, the sentence was reduced from two years to seven months in prison. Coria sued Universal Nutrition for $ 10 million in lost earnings in 2007, but withdrew the lawsuit after a settlement.
Final entry French Open 2004
His greatest achievement was reaching the final of the French Open in 2004, in which he had to face his compatriot Gastón Gaudio . Coria led against Gaudio after two sets 6-0 and 6-3. Gaudio countered in the third set, which he won 6: 4, and he also won the fourth clearly 6: 1, in which Coria suffered from cramps. Coria finally lost the decisive fifth set 6: 8.
Break and comeback
Started as number 10 in the world rankings Coria ended the 2006 season with a first round defeat against the Romanian Răzvan Sabău at the Challenger Tournament in Szczecin ; it was the culmination of a months-long crisis of form. As a result, Coria fell back to 116th place at the end of the year. In 2007 he did not play a single ATP tournament because of a shoulder injury; therefore he was no longer in the world rankings from the end of September 2007. His comeback on the tour took place on 28 January 2008 at the Movistar Open in Vina del Mar instead. Coria lost there in round one against Pablo Cuevas in three sets. Even at other tournaments, he celebrated no more successes worth mentioning.
On April 28, 2009, Coria announced his retirement from professional sport on the grounds that he lacked 100 percent passion.