RIO DE JANEIRO, BRAZIL - FEBRUARY 22: Dominic Thiem of Austria returns a shot to Gianluca Mager of Italy during the ATP Rio Open 2020 at Jockey Club Brasileiro on February 22, 2020 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)
RIO DE JANEIRO, BRAZIL - FEBRUARY 22: Dominic Thiem of Austria returns a shot to Gianluca Mager of Italy during the ATP Rio Open 2020 at Jockey Club Brasileiro on February 22, 2020 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)