 Nyora kupfuurira kweiyi ndima - Halák akamiririra Slovakia pasi rose pazviitiko zvakawanda. Akatanga kutamba nyika yake paIIHF World U20 Championship, achitanga mutambo wese wechikwata muzvose zviri zviviri 2004uye 2005 makwikwi, apo chikwata apedza yechitanhatu uye yechinomwe, zvichienderana zvakadaro. Chiitiko chekutanga chevakuru veHalák chakauya muna 2007 paakatamba mu2007 Mens World Ice Hockey Championships, achitanga mitambo miviri uye achiwana rekodhi 11. VaSlovak vakapedza vari pachinzvimbo chechitanhatu. Halák zvakare akamiririra Slovakia kumakwikwi e2009, uko timu yakapedza 10th yakazara. 