Matt Richardson won Olympic silver for Australia at the Paris Games before switching allegiance to Great Britain
Olympic silver medallist Matt Richardson stormed to two golds as Great Britain won nine medals, external at the Track World Cup in Hong Kong.
Richardson, who turned 27 on Friday, won the men's sprint and anchored the sprint team to victory alongside Joe Truman and Harry Ledingham-Horn.
His latest success comes two months after he won the European title in Turkey.
Emma Finucane added more gold in the women's sprint, and won silver in the team event with Rhianna Parris-Smith and Lauren Bell.
Finucane dominated the sprint event, securing a 2-0 win over Mina Sato in the final, and also won bronze in the women's keirin.
Richardson took silver in Paris in 2024 while racing for Australia before switching to race for Great Britain.
Olympic champion Harrie Lavreysen of the Netherlands was only fifth in Hong Kong as Richardson beat Kaiya Ota of Japan in the final.
Erin Boothman, making her international track debut, won silver in the women's madison alongside Maddie Leech, who also picked up silver in the team pursuit.
Gold - Men's team sprint (Joe Truman, Harry Ledingham-Horn, Matt Richardson), men's sprint (Matt Richardson), women's sprint (Emma Finucane)
Silver - Women's team sprint (Rhianna Parris-Smith, Emma Finucane, Lauren Bell), women's team pursuit (Meg Barker, Erin Boothman, Maddie Leech, Jess Roberts), women's madison (Erin Boothman, Maddie Leech)
Bronze - Women's keirin (Emma Finucane), men's omnium (Matt Bostock), men's madison (Logan Maclean, Will Perrett)
