Tuhia he haere tonu mo tenei whitianga - Ko Lehmann he whakakapi i te kapa Switzerland i te 8 o nga waahi i te 2012 World Junior Curling Championships
, ahakoa kaore ia i tākaro i roto i ngā kēmu. I muri mai i taua tau i wini ia i te mētara koura i te 2012 World Mixed Doubles Curling Championship me Martin Rios. Ka tohu ano te tokorua mo Switzerland i te 2013 World Mixed Doubles Curling Championship, engari i mutu i te 6th.