Zverev Staying Strong Halle 2017 Jun 21, 2017 Alexander Zverev discusses his second-round win against Philipp Kohlschreiber and hopes to continue his strong performance on the grass at the Gerry Weber Open. Watch live matches tennistv.com. Tags: 2017 Alexander Zverev Halle Interviews Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus