Novak Djokovic has issued another damning assessment of the quality of surfaces at Wimbledon in 2017, describing the courts as "not that great" after pointing out a hole on Centre Court.
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The Serbian summoned the chair umpire to take note of a threat to footing during his straight-sets victory over Adrian Mannarino in the fourth round on Tuesday (UK time).
"During the match I mentioned there is a hole in the middle of the court near the service line," he told the BBC. "He [the umpire] just asked me to show him and I did and he was not very pleased to see that.
"Courts, honestly, are not that great this year. Many players feel the same. It is what it is. The weather also affects the grass. The grass-court groundsmen, they know their job the best in the world.
"But the grass is probably the most complex surface to make, to maintain. It's not easy, they are trying their best. But I've played on better courts."
A heat wave during the lead-up to the tournament, which persisted during the early rounds, has left organizers struggling to preserve the quality of the grass in SW19.
The last eight beckons.@DjokerNole beats Adrian Mannarino 6-2, 7-6(5), 6-4 to reach the quarter-finals without dropping a set#Wimbledon pic.twitter.com/HSJPxyWIl5
— Wimbledon (@Wimbledon) July 11, 2017