After his win over Wawrinka, Zverev was asked whether impatience played a part in his struggles.
“Yeah, I was very impatient,” he said.
“In a way, also was maybe paying attention to it too much, to the Grand Slams. You know what I mean? I was paying too much attention to them.
“Everything else, I was just playing better tennis at the other tournaments. At Madrid, Rome, other Masters, the World Tour Finals. The Grand Slams maybe meant too much for me.
