A summary of Friday's action in the Davis Cup group stage matches.
Indian wild card entrant Jeevan Nedunchezhian crashed out of the Chennai Open after a bright start soon after Ramkumar Ramanathan stormed into the singles main draw with a superb win over higher-ranked Slovakian Norbert Gombos in Chennai.
Second seed Dominic Thiem celebrated his 27th birthday with a commanding 6-3, 6-3, 6-2 victory over India's Sumit Nagal on Thursday to move into the third round of the US Open.
Australian Nick Kyrgios blasted 15 aces to blow past Japan's Yoshihito Nishioka 6-2, 7-5 on Thursday and reach the quarter-finals at the Citi Open in Washington.
Images from matches played on Day 4 at the US Open at the Flushing Meadows in New York on Thursday.
Frenchman Benoit lost his temper in the third game of the second set when top seed Tsitsipas halted the match to attend to a broken shoe lace.
Images from Day 2 of the Wimbledon tennis championships in London, on Tuesday.