Zverev A. vs Del Potro prediction

Here we have a third round match on ATP Masters tournament in Shanghai in China on hard surface between Juan Martin del Potro from Argentina and Alexander Zverev from Germany. These two players have never met to date against each other. Del Potro has shown a lot of gaps in his game lately and he was very bad against Basilashvili in first round where he has won after a lot of trouble. In second round he has managed to win Rublev but young Russian is not still good enough for this level. On other side Zverev has been better and better and I think that he will control this match and that he will win it.