they are way more surprising than Czechs results ever were
Czechs had a regular top 10 player like Berdych and a DC legend like Stepanek and both made a very solid doubles team
You know you just described Belgium right, Goffin top 10 player when healthy, Darcis DC legend. Don't forget outside DC Berdych was a mental midget. Belgium doubles can be iffy though, can still get results too.