Misaki Doi

Misaki Doi (土居美咲, Doi Misaki, born April 29, 1991 in Ōamishirasato, Chiba) is a Japanese professional tennis player. She is left-handed and uses a two-handed backhand. Her highest WTA singles ranking is 54, which she reached on 23 November 2015. Her career high in doubles is 78, which she reached on 6 October 2014.

Junior career

Doi began playing tennis at the age of 3. She first distinguished herself in tennis as a middle-school student, reaching the semifinals of the All Japan Middle School Tennis Championships in both 2004 and 2006 and joining the ITF Junior Circuit in 2006. In 2007, while enrolled as a freshman in Sundai Kōei High School, Doi earned second place in the Japan Open Junior Championships in Nagoya.

A highlight of Doi's junior career was her successful doubles partnership with age-mate Kurumi Nara. They placed second in girls' doubles at the 2007 Wimbledon Championships, becoming only the second Japanese women's doubles pair to reach the finals of a Grand Slam juniors event since Yuka Yoshida and Hiroko Mochizuki at the 1993 US Open. Doi and Nara continued their run by advancing to the girls' doubles semifinals at a number of high-profile tournaments, such as the 2007 US Open and Wimbledon 2008. Doi also teamed with Romanian Elena Bogdan to place second in girls' doubles at the 2008 Australian Open. This flurry of successes catapulted Doi to No. 3 in Japan's under-18 tennis rankings for 2007; she had been recognized early on as one of Japan's rising stars in junior tennis.