 Complete the following phrase:  Kubiak was first selected to represent the Polish national team by coach Andrea Anastasi in 2011. With the Polish team, he won three medals in 2011 - silver at the World Cup and two bronzes at the World League and the European Championship. He was a gold medalist at the World League 2012 in Sofia, Bulgary. On 16 August 2014 he was selected to the Polish squad at the 