The Laver Cup match between Stefanos Tsitsipas and Diego Schwartzman was briefly interrupted by a climate change protester who set his arm on fire while he was on the pitch.
The bizarre protest at London’s O2 Arena came as Roger Federer prepared to play the final match of his career and with the 41-year-old sitting pitchside.
The protester broke through security to enter the field before staging the protest, setting his right arm on fire.
The incident was not shown by broadcasters, but court footage showed the man screaming in pain.
He was then removed from the field by security and taken out of the arena.
The man was wearing a t-shirt that read: “End UK private jets”.
The match resumed after the man was arrested and there was a further delay as liquid was drained from the pitch.
Earlier this year, a semi-final match at Roland Garros was interrupted by a climate change protester who chained herself to a net.
As an international sport, the best tennis players in the world depend on air travel between tournaments.