Whakaotihia te rerenga e whai ake nei: I te tuatahi he kaitakaro poitūkohu i Brno, Fleischlinger i muri mai ka noho hei kaiako ka arahi i te kapa Sokol Brno I. ki nga wikitoria taitara e rima i te Czech Basketball League i waenga i te 1945 me te 1951. Ko ia te kaiawhina kaiako o te kapa poitūkohu o Czechoslovak i te 1946 European Championship i Geneva, i riro ai i te kapa te mētara koura. Hei kaiako, e rua nga wa i arahi ai ia i te kapa motu i te Olympics (1948 i Rānana <unk> 7th wahi; 1952 i Helsinki <unk> 10th wahi) me te rua i whiwhi i te mētara hiriwa i te EuroBasket (1947 i Prague,
1955 i Budapest). Mai i te 1946, he kaiwhakawa FIBA ia, i muri mai he komihana i nga whakataetae FIBA. I whakarerea e ia tana umanga whakangungu i te tau 1955 kia taea ai e ia te whakapau kaha ki ana mahi hei kaitohutohu FIBA. I te Czech Basketball Federation, ko Fleischlinger te upoko o te waahanga kaiwhakawa me te mema o te komiti a te Federation.