A protester set his arm on fire after he ran onto the court and was briefly stopped during the Laver Cup match at London’s O2 Arena.
The young man, wearing a T-shirt emblazoned with the message ‘End Private Jets in the UK’, was quickly removed by security and detained in an internal corridor.
Laver Cup organizers said he had been arrested and was being “handled” by police.
The incident happened before the second set of the match between Stefanos Tsitsipas and Diego Schwartzman.
“He came out of nowhere,” said Tsitsipas, the Greek world number six. “I’ve never had an incident like this happen in court. I hope he’s okay.”
It is the latest security breach at a tennis tournament following incidents at the Australian Open and French Open this year.
A male protester, holding a banner reading ‘Abolish Refugee Detention’, jumped onto the court during the Australian Open men’s singles final between Rafael Nadal and Daniil Medvedev in January.
In May, a female protester He interrupted the semi-final of the French Open Between Casper Ruud and Marin Cilic. Philippe went to Chatrier, knelt by the net post, tied something around his neck and tied it to the net.
In London on Friday, there was a brief delay of around five minutes before the Laver Cup match resumed.
Tsitsipas, playing for Team Europe, had just won the opening set and the Greek cruised to a 6-2, 6-1 victory.
The win put Europe 2-0 ahead in the three-day group event after world number two Ruud beat Jack Sock 6-4 5-7 10-7 in Friday’s opening match.
Later, Swiss great Roger Federer plays the final match of his career when he teams up with Spain’s Rafael Nadal in a doubles match against Sock and fellow American Frances Tiafoe.