Three-time Olympic champion Jason Kenny received a reprieve to advance to the men's Keirin final on day three of the Track Cycling World Championships in Minsk.
The 24-year-old from Bolton was seeking to win the title Olympic champion Sir Chris Hoy claimed in Melbourne in 2012 and finished fourth in his semi-final following a photo finish, with only three progressing.
However, France's Francois Pervis was relegated by officials for impeding a rider on the inside and the Briton progressed as the third-placed rider behind Australian duo Andrew Taylor and Scott Sunderland.
Pervis will now ride for a minor placing in the race for seventh to 12th.
Maximilian Levy of Germany, Holland's Matthijs Buchli and Greece's Christos Volikakis advanced from the first semi-final heat.