On 8 April 2014, Wlazły was appointed to the Polish national team after 4 years of absence, by the head coach Stéphane Antiga. On 16 August 2014, he was appointed to the squad at the World Championship held in Poland. On 21 September 2014, Poland, including Wlazły, won a title of the World Champion. He received two individual awards for the "Best Opposite Spiker" and "Most Valuable Player" of the tournament. On the day of winning the gold medal, Wlazły announced his retirement from the national team. On 27 October 2014, he received a state award granted by the Polish President Bronisław Komorowski – Officer's Cross of Polonia Restituta "for outstanding sports achievements, and promotion of Poland in the world".