Head coach Frank de Boer has warned his Netherlands players there must be "no slackening" in their bid for Euro 2020 glory.

The Netherlands face the Czech Republic in the last 16 of Euro 2020 on Sunday as they look to win their opening four games of a European Championship for just the second time.

The sides will face each other at the European Championship for the third time (excl. Czechoslovakia meetings), with both sides winning one game apiece previously.

They last faced each other in a tournament at Euro 2004 when the Czechs came from two goals down to win 3-2, following an 88th-minute winner from Vladimir Smicer.

De Boer's men have looked in good form and were the top scorers during the group stage with eight goals ahead of the match in Budapest.

"After the win over North Macedonia, we pulled the plug for a while and had a day off," De Boer told a media conference on Saturday.

"But then we immediately picked up the thread again. The other members of the technical staff and the players themselves must ensure that there is no slackening.

"Players have to hold each other accountable for that as well.

"The Czech Republic know what they want and can disrupt us. They have many people working without a ball, and it is a team that is difficult to fight.

"We will have a lot of work to do and it will be great achievement to beat the Czech Republic."

De Boer claimed the Netherlands have the ability to win the tournament and acknowledged they have favourable recovery periods, but still need everything to click into gear

"Of course it depends on the game we show," De Boer added.

"I'm especially happy with the schedule we have now if we keep winning. If we progress one round, we have five rest days and then three rest days I'm happy with that schedule.

"The tournament is only successful if we sail through those challenges. We have the qualities to become European champions, but then everything has to be right."