is a retired Japanese professional tennis player, sports commentator, and entertainer. A former Wimbledon quarter-finalist, Matsuoka won one singles title during his career, in Seoul in 1992. In the same year, he reached a career-high ranking of world No. 46. Professional career Matsuoka turned professional in 1986. In 1989, he finished runner-up in the top-level tournament at Wellington, and captured the doubles title in Auckland. 1991 saw Matsuoka achieve his career-best Masters result, when he reached the quarter-finals of the 1991 Canada Masters in Montreal, beating Michael Chang in a dramatic 3-set battle en route. In 1992, Matsuoka became the first Japanese player to win a singles event on the ATP Tour when he captured the title in Seoul. He was also runner-up at the prestigious grass court tournament at Queen's Club that year. Matsuoka's best performance at a Grand Slam event came at Wimbledon in 1995, where he reached the quarter-finals, beating Karel Nováček, Mark Knowles, Javier Frana and Michael Joyce before being knocked down by Pete Sampras. Matsuoka won the first set but Sampras came back to win in four sets. Throughout the 1995 Tour, Matsuoka suffered from chronic muscle cramps. In February, during a match against Joseph Lizardo at the Davis Cup, he sustained an injury that required him to withdraw. At the US Open of 1995, during the fourth set of his first round match against Petr Korda, Matsuoka collapsed from severe cramping in his thighs which left him writhing in pain on the court for several minutes. The rules at the time meant that Matsuoka would have forfeited the match if he had gotten medical attention, so he was left to suffer until he was defaulted for delaying the match. The incident led to a change in the rules of professional tennis to allow players to receive medical treatment during matches. Matsuoka's career-high rankings were world No. 46 in singles (in 1992) and World No. 95 in doubles (in 1989). His career prize-money earnings totaled $1,117,112. He retired from the professional tour in April 1998. Post retirement Since his retirement from tennis Matsuoka has become a popular television sports commentator in Japan. He is a sportscaster for Hodo Station, hosting interviews and segments that focus on talented athletes. He also hosts the "Shuzo Challenge", an annual tennis camp for young children created by the JTA. Kei Nishikori, former World No. 4 and Japanese No. 1,