World number three Alexander Zeverev is set to make more Davis Cup appearances this year as his birth town of Hamburg was on Thursday named host city for the group stage along with Bologna, Glasgow and Malaga. Each of the four cities will host one group of four teams September 14-18, from which the top two advance into the knock-out stages to be played at a yet to be determined venue in late November. The group draw is set for March 31, with the 16-team field completed with wild card entry Canada, the International Tennis Federation said on Thursday. Zverev was born in Hamburg and helped the c…