Protester sets his own ARM on fire in bizarre demo at tennis court where Federer will play his match
A protester set fire to his arm during the opening session of this year's Laver Cup at The O2 in London.
The incident happened during the match between Stefanos Tsitsipas and Diego Schwartzman on the first day of the competition.
Tsitsipas clinched the first set 6-2 and during the changeover, a man ran onto the court and lit a fire, which briefly set his arm ablaze.
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