Whakakīhia te rerenga e whai ake nei: I mua i te rā whakamutunga o te whakawhitiwhitinga 2013-14, i whakawhitihia e te Blues a Halák, Chris Stewart, William Carrier, he kōwhiringa tuatahi i roto i
I whakawhiwhia ia ki te Buffalo Sabres hei utu mo Ryan Miller me Steve Ott i te 28 o Hui-tanguru 2014. Kaore a Halák i puta i roto i te keemu mo nga Sabres a i te mutunga ka tukuna atu me te waahanga tuatoru o te raupapa ki te Washington Capitals hei utu mo Michal Neuvirth me Rostislav Klesla i te wa mutunga o te hokohoko. I whakakakahu a Halák mo nga Sabres hei kaitiaki poari taapiri i tetahi keemu, ka waiho ia hei kaitakaro 10 i roto i nga hitori o Sabres ki te whakakakahu mo te roopu i roto i te keemu o te waa-roa engari kaore i te purei.