Greece's Stefanos Tsitsipas of Team Europe returns the ball to Australia's Thanasi Kokkinakis of Team World during their 2024 Laver Cup men's singles tennis match in Berlin, Germany on September 20, 2024. (Photo by Ronny Hartmann / AFP) (Photo by RONNY HARTMANN/AFP via Getty Images)

Head coach of Team World, former US tennis player John McEnroe, reacts during the 2024 Laver Cup men's singles tennis match between Greece's Stefanos Tsitsipas of Team Europe and Australia's Thanasi Kokkinakis of Team World in Berlin, Germany on September 20, 2024. (Photo by Ronny Hartmann / AFP) (Photo by RONNY HARTMANN/AFP via Getty Images)

Greece's Stefanos Tsitsipas of Team Europe celebrates after winning against Australia's Thanasi Kokkinakis of Team World during their 2024 Laver Cup men's singles tennis match in Berlin, Germany on September 20, 2024. (Photo by Ronny Hartmann / AFP) (Photo by RONNY HARTMANN/AFP via Getty Images)

Australia's Thanasi Kokkinakis of Team World returns the ball to Greece's Stefanos Tsitsipas of Team Europe during their 2024 Laver Cup men's singles tennis match in Berlin, Germany on September 20, 2024. (Photo by Ronny Hartmann / AFP) (Photo by RONNY HARTMANN/AFP via Getty Images)

Greece's Stefanos Tsitsipas of Team Europe returns the ball to Australia's Thanasi Kokkinakis of Team World during their 2024 Laver Cup men's singles tennis match in Berlin, Germany on September 20, 2024. (Photo by Ronny Hartmann / AFP) (Photo by RONNY HARTMANN/AFP via Getty Images)

Greece's Stefanos Tsitsipas of Team Europe returns the ball to Australia's Thanasi Kokkinakis of Team World during their 2024 Laver Cup men's singles tennis match in Berlin, Germany on September 20, 2024. (Photo by Ronny Hartmann / AFP) (Photo by RONNY HARTMANN/AFP via Getty Images)

Greece's Stefanos Tsitsipas of Team Europe celebrates a point as he plays against Australia's Thanasi Kokkinakis of Team World during their 2024 Laver Cup men's singles tennis match in Berlin, Germany on September 20, 2024. (Photo by Ronny Hartmann / AFP) (Photo by RONNY HARTMANN/AFP via Getty Images)

Greece's Stefanos Tsitsipas of Team Europe celebrates a point as he plays against Australia's Thanasi Kokkinakis of Team World during their 2024 Laver Cup men's singles tennis match in Berlin, Germany on September 20, 2024. (Photo by Ronny Hartmann / AFP) (Photo by RONNY HARTMANN/AFP via Getty Images)