England goalkeeper Joe Hart believes 'fine margins' cost the Three Lions the chance to earn a place in the knockout stages of the World Cup.
England performed relatively well in their opener against Italy and were on course to pick up a point against Uruguay, but fell to 2-1 defeats in both games to crash out of the competition after just two matches.
Speaking from the team base in Rio de Janeiro, Hart said the side has done everything but pick up the points in their first two games.
"There's fine margins," the Manchester City man said. "I think it's a hard one to analyse because we have done some good things in this World Cup but we haven't done the ultimate good thing, which is winning games."
He added: "It's a really hard one to take, we're very frustrated and it's an empty feeling right now but we've got another game to try and restore something and get something out of this trip."
England manager Roy Hodgson said that the side were well prepared heading into the World Cup, but their disappointing have called the experienced coach's methods into question.
Some have called for Hodgson to stand down after the tournament, but Hart believes that the squad and staff must stick together.
"We've come to this as a group we were looking to succeed as a group but we haven't and we've got to stick together, that includes the players, the staff and the management," he said. "We prepared as best we could and we just haven't performed on the field."
England now face Costa Rica in a game with very little meaning. The Ticos have already qualified and a draw will see them finish top of the the group, meaning they would avoid the winners of Group C.
The Three Lions will simply be playing for pride in their final game. Hodgson's men will hopefully be able to convert some of the promise they have shown in their first two games into a result that they can take back home.