Croatia, Kazakhstan compete at World Group quarterfinal in Davis Cup in Varazdin, Croatia

Dmitry Popko (L) of Kazakhstan shakes hands with Marin Cilic of Croatia after the Davis Cup singles at World Group quarterfinal between Croatia and Kazakhstan in Varazdin, Croatia, on April 6, 2018. Marin Cilic won 3-0. (Xinhua/Sanjin Strukic)