An rubuta shi ne ta Anaheim Ducks a cikin
2007 NHL Entry Draft, 121st gaba ɗaya a zagaye na huɗu. A cikin 2010, Ducks sun yi musayar haƙƙin Modig ga Pittsburgh Penguins a musayar zagaye na shida na zagaye a cikin 2010. Daga nan sai Penguins suka amince da sharuddan tare da Mattias Modig zuwa kwangilar matakin shiga na shekaru biyu.