Harry Kane scored in a 3-0 round-of-16 victory for England against Senegal.
England will meet holders France in the quarterfinals on Saturday.
Greek striker Dimitrios Diamantakos netted the all-important goal in the 17th minute.
Giroud became France's all-time top scorer and Mbappe struck a a brace for the holders.
Olivier Giroud had put France ahead in the first half. Robert Lewandowski managed a late consolation for Poland.
Tite stressed that Neymar's return was with the full backing of the team's medical staff and the player's physical health was the priority.
The media bus reached the Lusail Stadium, 10 minutes after the start of the Brazil-Cameroon game.
Lionel Messi scored a brilliant goal in the first half as Argentina won 2-1 in the round-of-16 encounter.
Argentina will meet the Netherlands in the quarterfinals.
A proud Danny Blind watched his son score the Netherlands' second goal in a 3-1 win over USA.