Are both Tom Okker and Kim Clijsters Belgian tennis players?
Tom Okker Thomas Samuel Okker (born 22 February 1944) is a former Dutch tennis player. He was ranked among the world's top 10 singles players for seven consecutive years, 1968–74, reaching a career high of World No. 3 in 1969. He also was ranked World No. 1 in doubles in 1969.
Ruben Bemelmans Ruben Bemelmans (] , born 14 January 1988) is a Belgian male professional tennis player. His career-high ATP rankings are world No. 84 in singles, achieved in September 2015, and world No. 128 in doubles, achieved in October 2012. As a qualifier, Bemelmans reached the quarterfinals of Vienna in 2013, defeating No. 4 seed Philipp Kohlschreiber en route.