Hydration boos and surprise results - World Cup talking points

Thousand of fans flocked to Argentina's Group J opener against Algeria to catch a glimpse of Lionel Messi [Getty Images]The first set of matches at the 2026 World Cup is complete.We have seen all 48 teams in action across three countries over a jam-packed seven days, with 75 goals scored and a smattering of upsets, individual brilliance and controversy.As the biggest World Cup in history gathers pace, BBC Sport take a look at five talking points from the opening week of the tournament.Europe and