After Kyrgios took the first set on the fifth day of the ATP Cup from sixth-ranked Stefanos Tsitsipas on a tiebreaker — and ultimately won the match 7-6 (7), 6-7( 3), 7-6 (5) — Tsitsipas unleashed a tirade that included destroying the racket in his hand.
An unintended casualty of the outburst? His father and Greek captain Apostolos Tsitsipas. During one of his attempts to destroy the racket, the younger Tsitsipas accidentally hit his dad in the arm
That led to Tsitsipas’ mother, Julia, emerging from the crowd to stand behind the bench and criticize her 21-year-old son for his behavior.