Andy Murray has shrugged off criticism from former Davis Cup captain David Lloyd over his appearance.
Lloyd had suggested that Murray should be more "clean-shaven" on court if he wanted to win a Grand Slam event.
However, the world number four dismissed the comments, citing the hirsute appearance of Bjorn Borg as he dominated tennis in his heyday.
"I don't think it makes any difference, guys like Borg didn't shave for weeks and months until they lost," he said.
"I heard what he said yesterday and I used to actually practise at one of his clubs, in Renfrew I think.
"He's entitled to whatever his opinion is, but I think he should stick to what he does best and that's building leisure clubs.
"It doesn't make a difference, it's whoever works the hardest, whoever plays the best wins the matches and that's all that's important."
Speaking at the opening of tennis courts close to the Braehead venue for the Davis Cup clash with Luxembourg, Murray also reflected on how he actually finds the pressured environment of Wimbledon enjoyable.
"I really enjoy it, it's a really good experience, it's different to the rest of the year," he said.
"There's a lot more focus on me during the tournament, whereas at all the other big tournaments, you know, it's not like that at all."
"Yeah, a little bit of extra pressure, a lot more people around - but I enjoy it."
Older brother Jamie Murray was keen to look forward to the Davis Cup tie after missing out the last time Britain played in Scotland, against Ukraine in 2009.
"I never played before in Scotland, the previous tie - it should be a good weekend," he said.
However, the doubles specialist warned the home support not to expect a one-sided contest.
"We've got to do our best to win the tie," said Murray.
"They've got a top-class player in Gilles Muller and it's going to be a difficult match I think, but I guess we're favourites to win.
"I think with a big crowd behind us, we can do it."