Becky James advanced to the women's sprint quarter-finals in supreme fashion on day three of the Track Cycling World Championships in Minsk.
The 21-year-old from Abergavenny, who won bronze medals in the team sprint bronze and 500m time trial on the opening two days, was the only rider to dip beneath 11 seconds in qualifying.
Her flying 200m time of 10.957 seconds meant she was the top seed and earned a first-round bye, before she dispensed with Lisandra Guerra Rodriguez in the second round. The Cuban had earlier knocked out James' team-mate Vicky Williamson in the first round.
While James advanced with minimal effort, Jason Kenny required two opportunities to progress in the men's keirin.
In an event taking place in the absence of defending world champion and Olympic gold medal winner Sir Chris Hoy, who is taking a sabbatical as he weighs up his future, Britain were represented by three-time Olympic champion Kenny and Matt Crampton.
The pair were drawn in the same heat, with only two riders to progress at the first time of asking and they were squeezed out of contention, finishing fifth and third, respectively, to fall into the repechage.
There were four keirin repechage heats, with only the first rider advancing to the second round, effectively the semi-final, from each.
Kenny and Crampton were again drawn in the same heat, meaning only one could advance.
Kenny took the initiative entering the final lap and had enough pace to hold off his challengers as Holland's Hugo Haak finished second and Crampton third.
Crampton will now turn his attention to the men's sprint this weekend.
Britain's other interest in the first session of day three was Jon Dibben in the omnium. The 19-year-old finished 11th in the opening race, the flying lap, with a time of 13.587, and then finished 11th again in the second event, the points race. He is currently placed 11th overall with four races remaining.