Doi Toshikatsu Doi Toshikatsu The adopted son of Doi Toshimasa, Toshikatsu is generally believed to be the biological son of Mizuno Nobumoto, though there are some who claim he was an illegitimate son of shōgun Tokugawa Ieyasu. He served the shogunate as advisor to shōgun Tokugawa Hidetada for many years, and played an important role in communicating and overseeing the enforcement of shogunal policy across the country; Doi also helped effect trade and diplomatic relations between Japan and the Thai Kingdom of Ayutthaya. He lost much of his influence and power upon Hidetada's death in 1632. Six years later, Doi became one
Misaki Doi loser berth in the main tournament. Doi was defeated by her first-round opponent Arantxa Rus of the Netherlands. After failing to qualify for the main draws of the US Open and Toray Pan Pacific Open, Doi found success at the HP Open, where she defeated Chanelle Scheepers of South Africa 2–6, 6–1, 6–3 to reach her first-ever tour semifinal. 2013 marked the first year in which Doi qualified for all four Grand Slam tournaments. In the 2013 Australian Open, Doi punched her second-round ticket with a 6–3, 6–4 victory over Croatian Petra Martić before losing 6–0, 6–0 to Maria Sharapova.