There were mixed fortunes for two members of New Zealand's gold medal-winning team sprint.
Sam Webster qualified for the quarter-finals, but Eddie Dawkins fell short. Webster will race against Olympic champion Jason Kenny tomorrow.
Aaron Gate lies last in the men's omnium after failing to finish the opening discipline, the scratch race. He suffered a penalty of -40 points and remains on -8, despite finishing fifth in the individual pursuit.
"That's the knife edge to a world championships," Elliott said. "Halfway through the race Aaron decided there was an opportunity to take a lap. He got within 10m but rest of the field wound up. The effort cost him too much energy, they eventually dropped him off the back... and that was the end of it."
Gate still faces the elimination race, 1km time trial, flying lap and points race.
Dylan Kennett finished seventh in the men's individual pursuit.