The Seleccao went the first 116 minutes of the game without getting a shot on target but progressed to the quarter-finals, much to the elation of their coach
Fernando Santos admits Portugal need to improve in the final third if they are to succeed in Euro 2016, but was pleased to see them grind out a 1-0 win over Croatia after extra time.
Neither side managed to register a shot on target in a lacklustre regulation 90 minutes, but Ivan Perisic hit the upright with a header in the second half of the additional period.
Portugal gathered possession from there and raced up the other end, with Ricardo Quaresma heading home after Croatia goalkeeper Danijel Subasic denied Cristiano Ronaldo in the 117th minute to set up a quarter-final against Poland.