BELGRADE, SERBIA - 24. APRIL: Taro Daniel of Japan plays a forehand against Matteo Berrettini of Italy during the Serbia Open semifinal match at Novak Tennis Centre on April 24, 2021 in Belgrade, Serbia. (Photo by Srdjan Stevanovic/Getty Images)
BELGRADE, SERBIA - 24. APRIL: Taro Daniel of Japan plays a forehand against Matteo Berrettini of Italy during the Serbia Open semifinal match at Novak Tennis Centre on April 24, 2021 in Belgrade, Serbia. (Photo by Srdjan Stevanovic/Getty Images)