World Cup 2018 KNOCK Out stage (Round 16), World Cup Round 16 Fixtures and Countries that qualified – World cup 2018 at Russia is indeed a great one during the group stage. Out of 32 countries that qualified for 2018 world cup, 16 of them qualified to Round 16 (Knockout Stage). The Group Stage matches for 2018 World Cup ends on 28th June, 2018. The knock-out stage or Round 16 for 2018 World Cup will begin or kick off on Saturday 30th June, 2018. Only countries that would be able to win their matches will be qualified for Round 8 – Knock out stage. The countries listed below qualified for Round 16 Knockout stage, also, the countries that will play each other on round 16 are also listed below.