claim: Henri Kontinen is currently ranked number 1 in the world for doubles in basketball.
evidence: Kawakatsu is a Japanese surname .. People with this name include  :. Kawakatsu clan. Kawakatsu clan. Kawakatsu clan. Heita Kawakatsu , current governor of Shizuoka Prefecture , Japan. Heita Kawakatsu. Heita Kawakatsu. Hiroyasu Kawakatsu -LRB- born , 1975 -RRB- , former football player. Hiroyasu Kawakatsu. Hiroyasu Kawakatsu. Masaharu Kawakatsu , Japanese zoologist. Masaharu Kawakatsu. Masaharu Kawakatsu. Ryoichi Kawakatsu -LRB- born 1958 -RRB- , former football player. Ryoichi Kawakatsu. Ryoichi Kawakatsu. Saburo Kawakatsu -LRB- born 1974 -RRB- mixed martial artist. Saburo Kawakatsu. Saburo Kawakatsu. Category  : Japanese-language surnames