Costa Rica manager Jorge Luis Pinto has suggested that his side beat Greece in their last-16 World Cup clash because they studied penalties.
The two sides played out a 1-1 draw in 90 minutes but Costa Rica prevailed in the shootout.
Costa Rica scored all five of their penalties as they progressed to the quarter-finals for the first time in their history.
Goalkeeper Keylor Navas saved Theofanis Gekas's kick whilst the Costa Ricans dispatched their spot-kicks emphatically.
Manager Pinto dedicated their shootout victory to the research they had conducted beforehand.
"We practised penalties before and we had studied the opposition and that's why we scored 100%," said Pinto.
The manager also spoke about the tightly-contested match in which his side were reduced to 10 men after 66 minutes. They led through a Bryan Ruiz goal early in the second half but conceded a last minute equaliser.
There only seemed likely to be one winner during extra time as Greece looked to make the most of their numerical advantage but Costa Rica held on for penalties.
Costa Rica character
Pinto admitted that his side were up against it at times but was pleased with the character they showed to progress.
"It was a dramatic match, a very difficult one. There were moments when we dominated the match but there were other moments when they did - but we were strong and we came through," he said.
Pinto went to say on to say that the last-16 victory was for the people of Costa Rica and expressed how proud he was of his side making history.
"This is an incredible emotion that we all feel. This is an important win for the team and for the whole country. We are really proud.
"We are making history. It's beautiful what we have done. This win is for everyone in Costa Rica."
A tough quarter-final clash awaits with Netherlands but win or lose, it has been Costa Rica's most successful World Cup campaign in their history.
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