Serbia eventually broke through with a truly spectacular free kick from Roma defender Kolarov, curled with power and precision into the near top corner. Mitrović is taking part in his first ever World Cup and will be eager to open his account with a goal against Costa Rica.
Tadic, 29, came into the tournament after an inconsistent season, but one he finished strongly, providing three assists in his final seven games.
The first three letters of Navas' first name described just how instrumental he was.
"The next rivals are Brazil and Switzerland, more powerful players than the Serbs", it said. "We want to relay this message to him and his family that we are 100 percent behind him", Koralov said. It will be the first match of the tournament for both the teams.
Costa Rica started brightly, with Vladimir Stojkovic diving to save at the feet of Marcos Urena, before Giancarlo Gonzalez headed straight at the Serbia goalkeeper.
Ronaldo saves the day as lacklustre Portugal edges Morocco
Portugal had one man to thank for not losing their opening game - and the identity of that man is hardly a surprise. Portugal's final match in Group B is against Iran at Mordovia Arena in Saransk on Monday.
The free-kick was the third scored from direct free kicks scored this season, already as many scored in the whole of 2014 World Cup.
Serbia starts with win over Costa Rica after stunning freekick goal. It was my debut with the national team.
Serbia finally broke the deadlock when Aleksandr Kolarov unleashed a scorching free-kick from 30-yards that gave Navas no chance on 56 minutes.
Lazio's 23-years-old Sergej Milinkovic-Savic, a reported target for Manchester United, was then found by Kolorov's long ball.
Now with Italian club Lazio, rumors have swirled that Manchester United might be interested in the dynamic 23-year-old Milinkovic-Savic.. "We know that it will be hard because we have to face Brazil and Switzerland".