Inan interview with a Czech newspaper, Bohdan Ulihrach said a test conducted on him during a tournament in Moscow showed unacceptable levels of norandrosterone, a metabolite of the banned steroid. The urine test indicated 5.2 nanograms per milliliter, which is fractionally over the 5.0 limit.

The 27-year-old is waiting for the result of the B sample before he decides whether to appeal a possible ban. If the second sample also yields a positive result, Ulihrach may get banned for two years.

Decision of Ulihrach to go public about the test appears slightly surprising to many as his name would not have been released for at least another three weeks under the Association of Tennis Professionals rules and that only if the second or B sample also came up positive.

Ulihrach has been world-ranked as high as No 22.