He made his debut for Germany against Romania on 13 February 2010.[1]
Metz was part of a group of German players who were sent to South Africa in 2009 to improve their rugby skills at the Sharks Academy as part of the Wild Rugby Academy program.[3] He was also the captain of the German under-21 team.[4] At the end of the 2010–11 season he left Germany again to study in Durban, South Africa.[5]