Spain were not at their fluent best during the group stage as they overcame the departure of manager Julen Lopetegui two days before the tournament.
Free-kick to Croatia after Rebic goes down in a challenge.
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"The type of game we will play will be different, we need to play differently to progress". And there are other well-known faces such as Dejan Lovren and Mario Mandzukic in the spine of the team as well.
Denmark should provide a tough resistance, though, and has a game-breaker of its own in Christian Eriksen.
Croatia with two thirds of possession, but Eriksen looking to spark something on the counter for Denmark. Kickoff for the winner-take-all World Cup matchup is scheduled for 9 p.m. Moscow Standard Time at the 45,000-seat Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, on Sunday, July 1. In team news, Yussuf Poulsen is likely to return to the side after serving his suspension against France.
Six of Croatia's seven goals at this year's World Cup have been scored in the second-half. If you are Croatia you've got to be thinking you've got a big chance of winning the World Cup.
- Denmark's knockout stage matches in the World Cup have produced 4.75 goals per game (19 goals in 4 matches). The Croatians will be looking to earn win No. 4 on Sunday against Denmark in Russian Federation 2018.
The Danes have been disappointing so far, and many would have preferred to see Peru or even Australia make it to the knockout stages ahead of them. Everything that's been asked of them they've done.
Only captain Luka Modric and Ivan Perisic remain from the starting line-up against Iceland, the Croats' last group match, which was played after they had already secured qualification for the last 16. Denmark will make life hard for them but in the end, Croatia's quality will show and they'll break them down.