Depends on what the definition of credibility is.
There is no doubt that cycling has a fair proportion of cheating riders (maybe they all cheat ????????).
Part of me wants to be believe that perhaps what I see on my TV is genuine and is done on the back of talent, hardwork and dedication.
But part of me knows that a large part of what we see also includes doping too.
I think the UCI has sacrificed itself on the altar of "faster, stronger, higher" "at any costs" ideal.
It sees the sport of cycling purely in commercial terms and if that means cyclists having to dope to keep the fans watching, they'll turn a blind eye.
The UCI misses the point.
If you've got guys winning the TDF or Giro and they're barely out of breath then how much further can the limit be taken ?
Instead if all the riders were clean - and I mean really clean - the TDF/Giro etc would be back to the original concept of man overcoming himself and nature and would make exciting viewing for the fan.
It's like the 4minute mile. Roger Bannister ran the first 4 minute mile, 50 years
ago.
These days if Bannister was running he'd be lapped.
But would he be lapped by clean athletes ?
Secondly, even if he was lapped by clean athletes, you try running a 4min mile - you'd appreciate just how good a runner Bannister was.
Try running a 4 min mile and see how far behind Bannister you'd be !
That's my view of cycling too.
I shake my head when I see riders finish stages and they're barely out of breath, after 7-8 hours in the saddle.
The turning point to me was 1996 : stage in the TDF in to Pamplona.
They were out for 7 hours on a boiling day : Riis and Ullrich were contesting the finish, Indurain finished in the pack.
45 minutes later Chris Boardman of Britain, finished.
Boardman was regarded as clean and he was a man prepared to suffer.
The interview he gave afterward in Pamplona tells it's own tale
CB "That was just a day I want to forget ?"
Gary Imlach "Chris, it's obviosuly been a very very tough day, can you make it to the end of the TDF ?"
CB "Right now, I can't say that I will make it because what i experienced today, I never want to experience again, It was just horrible"
Gary Imlach "The heat and the pace today took it's toll of a lot of riders, and the fact is that you can be proud that you came in within the time limit"
CB "it's a miracle that I did manage to do it because at times I didn't know where I was out there. I tried and tried to stay in the bunch but every pedal stroke was torture out there today. I can't event ell you who was in the lead. I was only trying to concentrate and to get to the time limit. I fell like retiring here and now, to be perfectly honest".
Gary Imach "thanks Chris, and best of luck for the rest of the TDF".
Boardman walked away looking like a haunted man.