Nick Kyrgios impressively rallied past Stefanos Tsitsipas at the Halle grass court tournament on Wednesday to hammer home his status as a Wimbledon threat but only after a spat with the chair umpire over sweating.
Kyrgios defeated world No 6 Tsitsipas 5-7, 6-2, 6-4 to reach a second successive quarterfinal after also making the last eight in Stuttgart five days ago.
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The 27-year-old smashed his racquet after losing the opener after saving three set points.
He then got into a minor spat with the chair umpire in the third game of the second set, landing himself with a warning for time-wasting.