María Camila Osorio Serrano (born 22 December 2001) is a Colombian professional tennis player. She has been ranked as high as No. 33 in singles and No. 477 in doubles by the Women's Tennis Association (WTA). She has won one singles title on the WTA Tour and three singles titles on the ITF Circuit. She is the winner of the 2019 U.S. Open women's singles championship . She defeated Alexandra Epifanova in the final, losing only one game. On the ITF junior circuit, Osorio is ranked No. 1 in the world, achieved in September 2019. At the 2018 Summer Youth Olympics, she and Nicholas won a bronze medal in girls singles and a silver medal in mixed doubles. Mejia.