One of cycling's unsolved x-files is the stage 15b individual time trial of the 1981 Vuelta..
It took place on a city circuit that criss-crossed and the course may or may not have been properly marked depending on which side of the story you believe.
This reasonable rider with a couple of good wins from breakaways but nothing major, who was certainly no time trialist, set the fastest time by 39 seconds. He had no idea he'd gone fast and he'd even crashed.
Some theorized he'd gotten up from the crash and ridden down the wrong route.....except he was followed by a support car and a commissaires car and the people in both cars said he rode the correct route. Also that he didn't hold on to the car.
The timekeepers were sure they hadn't made a mistake, and apparently had backup timekeeping that also showed the same time.
In the end, the Miko-Mercier team made such a stink that 2 minutes were added to his time. In those days at the Vuelta whatever the foreigners wanted they got. So, of course Miko-Mercier rider Regis Clere was promoted to 1st place with the stage win. Some sources refuse to credit Clere with the win.
Did he win honestly? We still don't know what happened.
Recently he became president of the spanish federation, headed the organization of the 2014 worlds and has held posts with the UCI.
edit: and i forgot his name. duh. Jose Luis Lopez Cerron