Whakakī i te rerenga e whai ake nei: I te 22 o Pipiri 2018, ko Dahlin te mea tuatahi i hangaia e te Buffalo Sabres i te Kaupapa. Ko ia te kaitākaro Swedish tuatahi ki te tīpako tuatahi katoa mai i a Mats Sundin i te
I te tau 1989, ko ia hoki te tangata tuarua o Huitene i tutuki i taua mahi. I te Hōngongoi 9, i hainatia e ia he kirimana taumata whakauru mo te toru tau me nga Sabres. I uru a Dahlin ki te puni whakangungu a Sabres me te whakatuwhera i te raarangi po mo te waa 2018-19. I hanga e ia tana NHL tuatahi i te Oketopa 4 i te hinganga 4-0 ki te Boston Bruins. I tuhia e Dahlin tana whaainga NHL tuatahi i te Oketopa 13 i te wikitoria 3 ki te 0 i runga i te Arizona Coyotes. I te 9 o Hui-tanguru 2019, i muri i te wikitoria i te Detroit Red Wings, ka noho a Dahlin hei kaitiaki tuarima i roto i te hitori o te NHL ki te tuhi 30 nga tohu i mua i te 19 tau. Whai muri i tana wa rookie, i whakaingoatia a Dahlin hei tetahi o nga whiringa toa e toru mo te Calder Memorial Trophy hei rookie nui i te NHL.