Portugal coach Fernando Santos took full responsibility for his side's 3-0 friendly defeat to Netherlands in Geneva.
European champions Portugal were 2-0 down after 32 minutes following goals from Memphis Depay and Ryan Babel before Dutch captain Virgil van Dijk added a third in first-half stoppage time.
The defeat was Portugal's heaviest since a 4-0 loss to Germany in their opening game of the 2014 World Cup, and brought an end to Cristiano Ronaldo's run of scoring in nine consecutive games for club and country.
"The responsibility for this defeat is mine." Santos told the Portuguese Football Federation's official website.
"It was me who chose the players and knew the opponent.
"We did not defend as normal. That is not the responsibility of player A, B or C -- it is everyone's, and above all mine."
Santos told reporters that it was "a tough result that obviously we are unhappy with."
He added: "They [Netherlands] deserve the praise. They defended well and closed up spaces -- we barely had any room. In the first half they had four chances, and three went in.
"We did not play well enough and that's our own fault, but it's also down to the opposition as well."
Portugal had to play the final half-hour with 10 men after Joao Cancelo was sent off for a second bookable offence.