Critic Alexander Zverev is seeing improvement in the Davis Cup format and is now involved in trying to get the team event to his birth town of Hamburg. Zverev told dpa at the Indian Wells Masters that “things are looking very good and hopefully we can bring the German team and the Davis Cup to Hamburg.” The German Tennis Federation had said on the weekend it was looking into hosting games and that Zverev was aiming to help. The world number three returned to the team event for the first time since 2019 last week and won both singles rubbers as Germany beat Brazil in a qualifier in Rio de Janei…