It was the fourth consecutive loss for the American after a third-round loss to Jan-Lennard Struff at the U.S. Open and defeat in both of his matchups against the Czech Republic in Davis Cup qualifying this month.
Carlos Alcaraz showed up at the U.S. Open on Monday for his first-round match with a new look: a shaved head.
Frances Tiafoe believes the "sky's the limit" for him after reaching the French Open quarter-finals for the first time on Sunday.
Frances Tiafoe blamed his heartbreaking five-set US Open semi-final defeat to Taylor Fritz on cramping after his "body shut down".
Frances Tiafoe set up an all-American US Open semi-final against Taylor Fritz on Tuesday, guaranteeing a home player in the men's final for the first time in 18 years.
World number one Jannik Sinner on Monday lifted his third ATP Masters trophy as the world number one beat Frances Tiafoe 7-6 (7/4), 6-2 to win the Cincinnati Open
Carlos Alcaraz survived a brutal encounter with close friend Frances Tiafoe at Wimbledon to keep his title defence on track with a 5-7, 6-2, 4-6, 7-6 (7/2), 6-2 win.
Carlos Alcaraz defeated Australia's world number 69 Aleksandar Vukic 7-6 (7/5), 6-2, 6-2 on the back of 42 winners.
World number five Andrey Rublev survived a huge scare on Friday to reach the semi-finals of the Hong Kong Open.
Frances Tiafoe led Team World to their first Laver Cup title as the American saved four match points in a dramatic victory over Stefanos Tsitsipas that denied Roger Federer a farewell trophy on Sunday