Olympic champion Alexander Zverev opens the Davis Cup game between Brazil and Germany on Friday. The German number one meets the Brazilian Thiago Wild in the opening singles from 8 p.m. German time. After that, Jan-Lennard Struff and Brazilian number one Thiago Monteiro face each other. Zverev only decided at short notice to be in Rio de Janeiro. After the negative headlines because of his disqualification at the ATP tournament in Mexico, Zverev is also concerned with polishing his image again. In Acapulco, Zverev hit the referee’s chair several times with a tennis racket after losing a double.