By Stuart McDill SYDNEY (Reuters) - Australian cyclist Stuart O'Grady could be stripped of his Olympic medals after admitting to using performance-enhancing drugs at the 1998 Tour de France. O'Grady, who retired this week, told a newspaper on Wednesday that he had used the banned blood-booster erythropoietin (EPO) before the notorious 1998 Tour. The admission came after a French Senate inquiry named him among riders with "suspicious" test results in a damning report into the 1998 race. ... More...