Serbia remain a point clear of Denmark after the top two in qualifying Group 4 played out a goalless draw in Kragujevac.
For the 2011 UEFA European Under-21 Championship hosts this represented a third clean sheet in as many matches and leaves them in a position of strength behind Serbia, who have drawn their last two, with a game in hand. Both are next in action on 15 November, when Serbia visit Northern Ireland and the Former Yugoslav Republic of Macedonia host Denmark.
The best chance of the first half was fashioned by Darko Lazović after two minutes, the FK Crvena zvezda attacker shaking off a defender but failing to outsmart Kristian Fæste with just the goalkeeper to beat.
Denmark threatened on the counterattack following the restart, with the impressive Rasmus Falk at the heart of the visitors' advances. After he had elicited a save from Branimir Aleksić, Serbia introduced 17-year-old FK Partizan midfielder Lazar Marković.
The teenager's arrival brought the crowd to their feet and within minutes he swept play out to fellow replacement Djordje Despotović, who cleared the crossbar from the right-hand side of the penalty area.