SAM Geddes, of Sutherland, won two bronze medals for Australia at the recent Youth Olympics in Nanjing, China.
The Illawong and Districts Senior Athletics member was third in the 100-metre sprint final.
In the preliminary round before the final, the teenager ran a personal best time of 11.69 seconds in her 100-metre event.
Sam was also selected to compete in a mixed 8 x 100-metre relay event and finished third to receive her second bronze medal.
Sam, a year 12 student at Caringbah High, is coached by Michael Dooley.
Another Illawong and Districts Senior Athletics Club member Tay-Leiha Clark won a silver medal in the triple jump.
Grace Robinson from St George District Athletic Club was seventh in the shot put.