The first quarter final is an early start for Brazil, as they take on Croatia to see who will take on The Netherlands or Argentina in the semi-final.
Previous quarter finals:
Croatia: This is their third appearance in this round, and they have progressed on both previous occasions. In 1998 they downed Germany 3-0, then knocked out hosts Russia on pens in 2018 after a 2-2 draw. 1998 was the last time Croatia won a knockout match in normal time in a major tournament.
Brazil: They have played 14 quarter final matches, including a replay in 1938, although they have not done so well recently, with many defeats to European nations once they reach the last 8. A 2-1 loss to Belgium in 2018 was preceded by a 2-1 victory over Colombia in 2014, but they did beat England in 2002 - their victory over Germany in the final was the last time they beat a European team in a World Cup knockout match.
Previous meetings?
Two world cup meetings in the group stages. A Kaká goal was enough to separate the sides in 2006, in the opening match of the 2014 World Cup Neymar (twice) and Oscar got themselves on the scoresheet after Croatia had taken the lead. Of the starters on that day, Thiago Silva, Dani Alves, Neymar, Lovren, Perisic, Modric and Kovacic can all feature today, Brozovic only made an appearance as a sub in 2014 and Modric was an unused sub in 2006.
(FIFA vids don't embed so you'll have to make do with unofficial highlights of mixed quality)