Jil Belén Teichmann (born 15 July 1997) is a Swiss professional tennis player. She has been ranked by the Women's Tennis Association (WTA) as high as world No. 21 in singles and No. 74 in doubles. She has won two singles titles and one doubles title on the WTA Tour along with one doubles title on WTA 125 tournaments, plus six singles and five doubles titles on the ITF Women's Circuit. A former junior world No. 3, Teichmann won a Grand Slam title in the girls' doubles event at the 2014 US Open. That year, she also won a gold medal for Switzerland in mixed doubles at the Summer Youth Olympics in Nanjing. (Source: Wikipedia.org, CC BY-SA)