Roger Federer lost the last official match of his tennis career.
At the Laver Cup in London, the 41-year-old Swiss lost late on Friday evening alongside Spaniard Rafael Nadal to the US duo Jack Sock and Frances Tiafoe in a tie-break match 6: 4, 6: 7 (2: 7), 9:11.
Federer announced last week that he would end his career after the team competition.
The Swiss had to have a total of three knee operations.
He played his last game on the ATP tour at Wimbledon over a year ago.
Federer has won more than 100 titles in his career and triumphed 20 times in one of the four Grand Slam tournaments.
The Laver Cup pits a European team against a selection of players from the rest of the world from Friday to Sunday.
After the first day it is 2:2.
excitement before the match
Shortly before Federer's last match, a climate activist caused a stir with a fire and put himself in great danger.
During the second match of the opening day between Stefano Tsitsipas (Greece) and Diego Schwartzman (Argentina), a young man ran onto the pitch, sat down and lit a fire.
He briefly set his right arm on fire.
Security forces put out the small fire and carried the activist, who was wearing a t-shirt that read "No British private jets" on it, out of the concourse.
"It came out of the blue," said Tsitsipas: "I have no idea what it's all about.
Nothing like this has ever happened to me on the pitch.
I hope he's fine.” The match resumed almost five minutes later.
Tsitsipas prevailed 6-2, 6-1 and gave Team Europe a 2-0 lead after Casper Ruud (Norway) had previously beaten Jack Sock (USA).
At the Laver Cup, a European team plays against a selection of tennis players from the rest of the world from Friday to Sunday.