Polovets, Qipchaks or Cumans, all the same Kipchak Turks in Europe and the Great Steppe by Turcolog Murat Adji (Medieval History of the Türkic People and the Great Steppe)..."Do the Englishmen know, what their favorite polo game (on horses and with sticks) was popular in Altai before the Great Movement of Peoples? They drove not a wooden ball, but a head of the enemy bound in a leather bag. Türks have not forgotten this game, as well as many other ancient games."
his web site for English,Deutsch: http://www.adji.ru/books_en.html