The incident happened during the opening match between Stefanos Tsitsipas and Diego Schwarzman on the first day of this year’s Laver Cup. Tsitsipas closed out the first set 6-2 and during the change, a man ran onto the court and lit a fire, which briefly set his hand on fire. The person was wearing a t-shirt that read ‘End UK Private Jets’ and was quickly pulled out of the stadium after the fire was put out. Image: Photo: AP After a short delay, the race, the second of the first day, was able to resume. Tonight, Swiss star Federer, 41, will play for the last time before retiring from tennis. The 20-time Grand Slam champion will team up with old rival Rafa Nadal for a match with Team World’s Francis Tiafoe and Jack Sock. Read more: Roger Federer prepares for final match Federer announces retirement after winning 20 Grand Slams Last week Federer announced his retirement after facing challenges in the form of “injuries and surgeries” and said he would stop playing competitively after the Laver Cup. Ahead of tonight’s match, the tennis star teased his fans, tweeting: “Going to hit the practice courts for the last time with @RafaelNadal. might do an IG Live on the way.” Federer, who has won 20 Grand Slams, including eight Wimbledon titles, created the tournament with his agent to honor his idol, Rod Laver.