Greg Rusedski arrived in Montreal today for a closed-door doping hearing that could result in a two-year ban for the Briton.
Rusedski arrived in a limousine accompanied by his wife Lucy then strode purposefully into the offices of lawyer Yves Fortier, who will head up the three-man panel appointed by the Association of Tennis Professionals (ATP) to investigate the positive test for the banned steroid nandrolone.
A decision is expected to take up to two weeks and, if found guilty, the 1997 U.S. Open finalist would face a ban of up to two years.
Fortier's executive assistant Micheline Corriveau said lawyers for Rusedski and the tribunal would make no comment on today's proceedings. Corriveau added that no decision would be made but expected the hearing to be completed today.
Rusedski, 30, has denied taking performance-enhancing drugs.
His defence is likely to make much of the fact that seven other players on the men's professional tour were exonerated after an independent inquiry ruled last year that they had taken contaminated electrolite supplements handed out by ATP trainers.
The ATP, who run the men's tour, stopped its staff handing out the supplements in May 2003.
Rusedski tested positive for nandrolone two months later and is believed to be the only player to have exceeded the allowable limit since the announcement.