MONTE-CARLO, MONACO – APRIL 15: Girlfriend Sophia Thomalla of Alexander Zverev of Germany celebrates his win against Jannik Sinner of Italy in the quarter finals during day six of the Rolex Monte-Carlo Masters at Monte-Carlo Country Club on April 15, 2022 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

MONTE-CARLO, MONACO – APRIL 15: Alexander Zverev of Germany celebrates defeating Jannik Sinner of Italy in the quarter finals during day six of the Rolex Monte-Carlo Masters at Monte-Carlo Country Club on April 15, 2022 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

MONTE-CARLO, MONACO – APRIL 15: A general view as Grigor Dimitrov of Bulgaria plays Hubert Hurkacz of Poland during day six of the Rolex Monte-Carlo Masters at Monte-Carlo Country Club on April 15, 2022 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

MONTE-CARLO, MONACO – APRIL 15: Morgan Riddle Girlfriend of Taylor Fritz of USA looks onagainst Alejandro Davidovich Fokina of Spain in the quarter finals during day six of the Rolex Monte-Carlo Masters at Monte-Carlo Country Club on April 15, 2022 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

MONTE-CARLO, MONACO – APRIL 15: Father and coach Apostolos Tsitsipas shows his support for Stefanos Tsitsipas of Greece against Diego Schwartzman of Argentina in the quarter finals during day six of the Rolex Monte-Carlo Masters at Monte-Carlo Country Club on April 15, 2022 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

MONTE-CARLO, MONACO – APRIL 15: Stefanos Tsitsipas of Greece is congratulated by Diego Schwartzman of Argentina after his win in the quarter finals during day six of the Rolex Monte-Carlo Masters at Monte-Carlo Country Club on April 15, 2022 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

MONTE-CARLO, MONACO – APRIL 15: Diego Schwartzman of Argentina reacts in his match against Stefanos Tsitsipas of Greece in the quarter finals during day six of the Rolex Monte-Carlo Masters at Monte-Carlo Country Club on April 15, 2022 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

PRAGUE, CZECH REPUBLIC – APRIL 15: Emma Raducanu of Great Britain reacts during the Billie Jean King Cup Play-Off match between Marketa Vondrousova the Czech Republic and Harriet Dart of Great Britain at the Tennis Club 1. CLTK Prague on April 15, 2022 in Prague, Czech Republic. (Photo by Clive Brunskill/Getty Images)

PRAGUE, CZECH REPUBLIC – APRIL 15: Emma Raducanu celebrates after their victory during the Billie Jean King Cup Play-Off match between the Czech Republic and Great Britain at the Tennis Club 1. CLTK Prague on April 15, 2022 in Prague, Czech Republic. (Photo by Clive Brunskill/Getty Images)

PRAGUE, CZECH REPUBLIC – APRIL 15: Young fans of Great Britain look on as Emma Raducanu of Great Britain plays against Tereza Martincova of the Czech Republic during the Billie Jean King Cup Play-Off match between the Czech Republic and Great Britain at the Tennis Club 1. CLTK Prague on April 15, 2022 in Prague, Czech Republic. (Photo by Clive Brunskill/Getty Images)