Has František Čermák and Horia Tecău both reached the top ten ranking in tennis doubles?
František Čermák František Čermák (born 14 November 1976) is a Czech professional tennis player. He has won 31 doubles titles on the ATP Tour and has been a finalist 24 times. He achieved a career-high doubles ranking of World No. 14 in February 2010. He usually plays doubles with Filip Polášek. In mixed doubles, Čermák and partner Lucie Hradecká reached the final of the 2013 Australian Open and won the 2013 French Open. In singles, Čermák won 1 Challenger title and 10 Futures titles, reaching a career-high singles ranking of World No. 201 in October 2003.
Marsel İlhan Marsel İlhan (Uzbek: "Marsel Qahhorovich Hamdamov" ; born on 11 June 1987) is a Turkish professional tennis player, ranked No. 1 in Turkey and with a career-high singles ranking of world No. 77 in March 2015. He is the first ever Turkish player to reach the 2nd round in a Grand Slam tournament, as well as the first Turkish player to win a Challenger Tournament and also the first Turkish player to enter the top 100 in the world ranking (first ranked 96th in September 2010).