Dustin Brown suspended by the German Tennis Federation (DTB) for Davis Cup competition in 2017. Mischa Zverev & Tobias Kamke also suspended! According to a statement by Dirk Hordorff, Vice –President at the DTB, in “Süddeutschen Zeitung” Dustin Brown, Mischa Zverev and Tobias Kamke have been suspended for the 2017 Davis Cup competition. Allegedly the…