Nick Kyrgios couldn't resist a jibe at Rafael Nadal at Halle, saying players have to wait for him to be ready for a point 'many times.'
Kyrgios was playing Stefanos Tsitsipas in Halle, and he received a code violation for the Greek having to wait to serve to him during the second set.
When he was given his warning by the umpire, Kyrgios pleaded his case, saying: "This happens every match, I waited so many times for Rafa."
After the match, he gave his side to the story, and maintained he was treated unfairly by the official.
"He said I was playing too slow," he said. "Statistically I'm one of the fastest!
"I had to walk to the sidelines to get my towel. There is this thing called sweat in 30 Celsius heat that runs down onto your hands.
"I needed to wipe my hands - and he gave me a warning."
Despite the two code violations and losing the first set, Kyrgios once again showed his quality in grass court tennis by overcoming the world number four 5-7, 6-2, 6-4.
If he wins the tournament it would be, surprisingly, his first career title on grass. It would also get him a seeded position in the Wimbledon draw.
Explaining his inability to win a grass title so far in his career, Nick Kyrgios said: "Well, it doesn't help that there's only four, five weeks a year on grass.
"If there were as many grass-court tournaments in Australia as there are clay-court tournaments in Europe, I'd never leave Australia.
"I feel like I'm one of the best on the grass and hopefully maybe it will be this weeks.
"But it's one round at a time and we'll see how it goes."
Kyrgios will face Pablo Carreno Busta next, a player whose career win percentage on grass far from impressive.
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