Has František Čermák and Horia Tecău both reached the top ten ranking in tennis doubles?
Horia Tecău Horia Tecău (] ; born January 19, 1985) is a Romanian tennis player currently ranked World No. 9 in doubles. He turned pro in 2003 and reached the men's doubles finals of the 2010, 2011 and 2012 Wimbledon Championships with Robert Lindstedt before winning it in 2015 with Jean-Julien Rojer, with whom he also won the 2017 US Open. Tecău also won the 2012 Australian Open mixed doubles title with Bethanie Mattek-Sands and the 2015 ATP World Tour Finals with Rojer.
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).