British cyclist Laura Trott won her second event in the women's omnium with victory in the elimination race at the Olympic Velodrome.
Trott was third after two events of the two-day omnium, but the elimination result restored the world champion to the top of the standings.
The 20-year-old from Cheshunt won team pursuit gold on Saturday and clocked 14.057 seconds in the flying lap to win the opening event.
Clara Sanchez of France was second in 14.058secs, with Annette Edmondson of Australia third in 14.261.
Trott finished 10th in the 20km (80 lap) points race, winning the final sprint as Poland's Malgorzata Wojtyra won as one of nine riders to lap the field and claim 20 points.
Trott was the leading rider behind those who gained a lap, but slipped one point off the pace as Sarah Hammer of the United States took the lead after two events on 10 points, with Canada's Tara Whitten second on count back.