KANSAS CITY, Missouri, June 16 : Algeria coach Vladimir Petkovic said mistakes from his team had made it easier for Lionel Messi to score the hat-trick that saw him match the World Cup scoring record in Argentina's 3-0 victory in Kansas City on Tuesday. Messi picked the North Africans apart in a winning start to Argentina's title defence, and while Petkovic applauded the 38-year-old's performance he said his players had given him too much room to manoeuvre. "Class is permanent, because we're