The Dutch boss explained his decision to leave out defenders Urby Emanuelson and Hedwiges Maduro among seven others from his provisional squad for Euro 2012Netherlands coach Bert van Marwijk says he picked players for a pre-Euro 2012 training camp in Switzerland based on their level of performances this season.
The Oranje trainer cut down the size of his provisional squad for the summer championship in Poland and Ukraine by nine to 27, with Urby Emanuelson and Hedwiges Maduro - capped 14 and 18 times respectively - surprisingly left out.
Three uncapped players were retained in the squad travelling to Lausanne on Thursday to prepare for a friendly against Bayern Munich on May 22: PSV left-back Jetro Willems, AZ midfielder Adam Maher and Heerenveen striker Luciano Narsingh.
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"Some players have been rewarded [for their performances] and the training sessions confirmed what we already knew.
"We also looked at the broad issues in selection and that is mainly the left-back position. That is why we invited so many players."
AC Milan's Emanuelson was expected to replace the injured Erik Pieters at left-back, but his lack of regular match action appears to have cost him a place in the squad.
Meanwhile, Arjen Robben, Ibrahim Afellay and Stjin Schaars will not take part in the training camp due to club commitments.
Van Marwijk must name his final 23-man squad by May 29 for next month's tournament, in which Netherlands have been grouped alongside Denmark, Germany and Portugal.