Results from the ATP tournament in Belgrade on Thursday (x denotes seeding): Quarter-finals Novak Djokovic (SRB x1) bt Federico Coria (ARG) 6-1, 6-0 Andrej Martin (SVK) bt Dusan Lajovic (SRB x5) 3-6, 6-3, 6-4 Alex Molcan (SVK) bt Fernando Verdasco (ESP) 6-2, 6-0 Federico Delbonis (ARG x8) bt Roberto Carballes Baena (ESP) - walkover afp