Jess Varnish won the all-British women's sprint semi-final ahead of Becky James to advance to the gold medal ride-off on the second day of competition at the Track World Cup in Glasgow.
Varnish, whose focus on the specialist starting spot in the team sprint in London ended in Olympic disappointment, claimed a 2-1 win to advance to the final against Kristina Vogel at the Sir Chris Hoy Velodrome.
The Bromsgrove rider led in the first bout, but Commonwealth Games silver medallist James took the initiative at the bell to go to the front.
However, Varnish had enough strength to round her rival and use the long straight to her advantage to go 1-0 up.
Former world junior sprint champion James held off Varnish's charge in the second contest to level, but Varnish edged a narrow third bout to advance with a 2-1 win.
Germany's Vogel beat Lee Wai Sze 2-0 to advance to the final.
In the men's keirin, Briton Lewis Oliva, competing for Wales-Team USN crashed on the final corner of his semi-final heat and was taken away on a stretcher.
In the second heat, three-time Olympic champion Jason Kenny was a comfortable winner to advance to the final.
The keirin event, which begins behind a motor-paced Derny has been dominated by Sir Chris Hoy in recent years, with Olympic titles in Beijing and London.
The men's individual pursuit was won by Denmark's Lasse Hansen in four minutes 20.875 seconds, with Ireland's Martyn Irvine second in 4mins 22.745secs, a significant personal best.