In an interview to Tages Anzeiger Stan Wawrinka' coach Daniel Vallverdu commented on Swiss player's great US Open run. Wawrinka beat Novak Djokovic to reach the quarter-finals. "It's just difficult to destroy his game", said Vallverdu.
"Stan did a good job. He made him work from the beginning to the end. It's a pity Djokovic had to retire. Sometimes they played an amazing tennid. But at the times you could see Djokovic was not comfortable enough. I wish Djokovic just the best.
Stan had to be ready and we told him before the match that the first set would be crucial. They know each other well, they often train together. That's why Stan does not feel uncomfortable on court with Djokovic. They already had epic matches that I really enjoyed as a fan."
Vallverdu added: "I try to help as best as I can. I have been knowing Stan personally for a long time. And it's great to work with Magnus (Norman) and Yannick (Fattebert). I have been facing Stan for ten years and I know his weaknesses.
Opponents are afraid of his mentality, his on court toughness, his strong shots. It's bad for the opponents if his balls are always given back. That makes him not get crazy, not feel pressure." Wawrinka lost to Daniil Medvedev on Tuesday in four sets. The Lausanne native will be back on Tour in a few weeks at the St. Petersburg Open.