 Nyorai kuenderera kweiyi ndima - Lehner akatanga kumiririra Sweden pasi rose pa2009 IIHF World U18 Championships muMinnesota. Akanga ari muchengeti wepagedhi anotanga mumutambo, achibatsira Sweden kunzvimbo yechishanu-chinzvimbo chinzvimbo achinyora.916 SV uye 2.80 GAA. Lehner akarekodha imwe shutout mumutambo, achivharira 20 pfuti mukukunda 7-0 kwekutanga kutenderera pamusoro peCzech Republic. Lehner anotevera akatamba chikwata chechidiki cheSweden pa2011 World Junior Ice Hockey Championshipskumadokero kweNew York. Akatanga mumutambo weSweden we semifinal neRussia, iyo Sweden yakarasikirwa ne4 kusvika ku3 mukukwikwidza. Lehner akatsoropodza vatambi mushure memutambo, achiti akarasikirwa nechinangwa chechipiri cheRussia nekuti aitarisira kufona kwekutamba. 