 The city became home to Poles who had emigrated from Polish areas annexed by the Soviet Union east of the Curzon line, where they had been asked by the Soviet authorities to either accept incorporation into the U.S.S.R. or to leave what had been their former homeland.Grudziądz has two professional sports teams.The largest following has the popular speedway team GKM Grudziądz, whereas the local football team Olimpia Grudziądz has a slightly more modest following, playing in the second tier of Polish football.