Alexander Zverev (GER) vs.  Jan-Lennard Struff (GER)
It was not an easy victory for our spotlight player in this all German affair. Struff had never taken a set from him in their previous encounters and today he came pretty close to winning the match; however, pretty close does not count. When it mattered, Zverev was mentally stronger, he believed he was going to win and won because he believed. Struff on the other hand was plagued by doubts and at critical moments his forehand went astray. The errors that came from his racquet at those critical moments were the result of his nervous state and until he can control that, he will continue to struggle to win consistently against top players.
When you watch a match like this and see how talented Struff is, you quickly realize that his lack of success has to be the result of his poor mental fitness. Eight years on tour and he has never made it to an ATP World Tour final, which proves the point once again of how important the mental aspect is in individual sports. It must be so frustrating for him to know that he has the game; yet, he continues to struggle to get to the next level. Zverev won 3-6, 7-6(3), 7-6(5) and will play the number two seed, Roberto Bautista Agut, in the semifinals. Interestingly, Bautista Agut leads their head-to-head 2:0 but I think Zverev is better equipped now to change that statistic.
SOURCE OF IMAGE: Getty Images