Tour de France holder Chris Froome believes it is "inevitable" that his reputation will be questioned following Jonathan Tiernan-Locke's anti-doping violation.

Team Sky rider and former Tour of Britain winner Tiernan-Locke was asked to explain a discrepancy in his "biological passport data" by the UCI, the sport's governing body, in September.

However, Team Sky have pointed out that these discrepancies occurred before Tiernan-Locke signed for Sky in 2012. 

A biological passport is a system used by the UCI amongst other governing bodies to deter doping in sport.

Every single drugs test of a single athlete is electronically recorded as a marker for future tests.

If a test differs dramatically from the athlete's various levels, then the athlete will be questioned as to the reasons why these differences have occurred.

Team Sky have prided themselves on their stance towards drugs: riders who have any history of doping whatsoever, regardless of whether they are clean now, cannot ride for them.

Froome told BBC Sport: "Inevitably that [his reputation being tarnished] is the reality of it. It's hugely unfortunate for the team this is now happening.

"It's still being contested and there's going to be a trial, I think we're going to have to wait until the end of the trial to actually know exactly what's going to happen.

"I really do think the best thing to do with the whole doping culture of the sport, to move past that image that we've had in the past, is to talk about it,

"Be completely open and say: 'Listen, this was is what happened in the sport back then but it's definitely not happening any more, and these are the reasons."

"It needs to be talked about and we need to move on from that.

"But there is going to be a point when enough is enough, and we need to get on and start talking about the good things in the sport and the great racing that's getting missed now because we're harping on about what happened 10 years ago."

Tiernan-Locke's former team manager, Brian Smith, backed the Briton, saying: "I'm 100% behind him. He's not a doper. Endura racing had a no-doping stance and as far as I'm concerned he was true to his word.

"Throughout the Tour of Britain he was urine-tested every day and a blood booster would have shown up, so it doesn't make sense."

Due to the long history of drug taking in cycling and particularly in light of the Lance Armstrong scandal which plagued the early part of 2013, Froome spent the majority of his Tour de France winning campaign denying doping allegations.

Tiernan-Locke's defence starts now. 

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