Since 2018, there have been 13 new ATP Masters 1000 champions (Del Potro, Isner, Khachanov, Thiem, Fognini, Medvedev, Hurkacz, Tsitsipas, Norrie, Fritz, Alcaraz, Carreño, Coric) and 12 new WTA 1000 champions (Osaka, Stephens, Bertens, Sabalenka, Andreescu, Barty, Keys, Swiatek, Giorgi, Badosa...