Brazil captain Cafu enters the record books as he plays in his third successive World Cup final - admitting defeat against Germany would be even worse than the loss to France four years ago.
Cafu sampled victory in the penalty shoot-out against Italy in 1994, but was also a member of the Brazil side that crumbled against hosts France four years later.
He revealed he was in tears of joy as he spoke to his family in Brazil after reaching his third final with victory against Turkey, but warned it would mean nothing if they lost to Germany in Yokohama on Sunday.
Cafu said: "If we don't win now we have lost everything. All the good work we have done will be wasted by defeat against Germany.
"It would be a disaster, even bigger than when we lost to France four years ago.
"It is an honour to play in a third World Cup final, but all I want now is victory - nothing else will matter if we lose again."
He added: "The happiness I felt after reaching the World Cup final for a third time was huge.
"The first thing I did after swapping shirts was grab a mobile phone and ring my family in Brazil.
"I sat on the stairs of the stadium in Saitama and shared the moment with my family.
"I cried tears of joy as I told them I was going to a World Cup final again.
Cafu's first World Cup final was in 1994
"Now, after that joy, nothing must distract us from our main goal, which is winning the World Cup and taking it home to Brazil."
Cafu's attacking raids with fellow full-back Roberto Carlos have been a feature of Brazil's progress to the final, but the Roma defender insists the side's success is down to teamwork.
He said: "Our coach Luiz Felipe Scolari knows we do it for our clubs, so it is natural that we continue to play with such freedom for Brazil.
"The team also understands the need to support us. If we go forward there is always someone to cover us. We are a true team and this is part of it."