Yes, Pekhart has won a league title in Poland. In 2014, he won the Ekstraklasa with Lech Poznań, scoring 17 goals in 35 appearances. This was his first major trophy in his career, and he has since gone on to win the Polish Super Cup and the Polish Cup with the club.
Unleashing the Enigma: A Quiz on Tomáš Pekhart - the Czech Football Maestro