Australia and NSW Waratahs winger Wendell Sailor has admitted he let his team-mates down after being suspended from rugby for failing a drugs test.
Sailor's rugby career could be over if his B sample is positive
The news about Sailor's indefinite ban emerged shortly before the Waratahs' 19-14 defeat by Wellington on Saturday.
"It's been a pretty tough time," admitted the 31-year-old.
"My thoughts are with the boys at the moment. I put a little bit of pressure on them at the weekend. Obviously I've got a family to look after here."
Sailor was notified last week by the Australian Sports Anti-Doping Authority that part A of a sample he provided recently had returned positive.
He could face a two-year ban if a B sample confirms the banned substance, although it is not known yet if it is a recreational or performance-enhancing drug.
A two-year ban could effectively end the career of the former rugby league international who has a reported A$750,000 (£305,000)-a-year contract with the Australian Rugby Union (ARU).
There appears to be no prospect of a return to rugby league should a rugby union ban be imposed.
Both Australia's NRL and England's Super League are signed up to World Anti-Doping Agency (Wada) rules about respecting drug bans from other sports.
But Sailor has received public support from some of his team-mates, and from Waratahs coach Ewen McKenzie.
"We are all obviously disappointed for him, we are all feeling for him," said Waratahs vice-captain and Australia flanker Phil Waugh.
"We will stand by him and stick by him. That's one of the good things about the culture of this team."
Sailor had to aplogise for his behaviour in a Cape town nightclub in February
McKenzie said Sailor, who has already been fined and suspended this season over an incident in a Cape Town nightclub, would not be "cast adrift".
"People make mistakes but obviously some people make more than others," said McKenzie.
"But I'm not going to condemn him as a person. I like him as guy, he's a terrific bloke, he's done a lot of good things for us.
"He's made a couple of mistakes, it's important we deal with those situations.
"He's got the rest of his life to deal with as well so I'm certainly not going to cast him adrift."
Sailor switched codes in a lucrative deal in 2002, and had four seasons with the Queensland Reds before moving to the Sydney-based Waratahs this year on a two-year deal.