Roger Federer remained the last person to sit in the Royal Box to watch the Wimbledon action on Center Court on Monday.Arthur Fery and Grigor Dimitrov’s match, which ended with Fery’s victory, did not end until after 8 pm, with Alexander Zverev not to face Jiri Lehecka under the roof after that. Instead of leaving the center, as many famous people have done, Federer stayed behind out of respect for Zverev and Lehecka.Known for his grace on and off the court, the tennis legend seemed to enjoy every ball as Zverev led 6-4, 7-5, 3-3 when play was suspended after the 11pm Wimbledon deadline.Also in the Royal Box on Tuesday were tennis legend Billie Jean King, Formula One driver Kimi Antonelli, and English female soccer player Alessia Russo.Apart from the cast, Comic Relief co-founder Lenny Henry, actor Ncuti Gatwa, and BBC Sport director Alex Kay-Jelski were in attendance.Watch:As Zverev’s match continued, a few spectators returned to the Royal Box.The eight-time Wimbledon champion was the favorite of the home crowd at SW19. After beating Dimitrov, Fery was surprised and said that he saw Federer sitting in front of the Royal Box while he was playing.“‘When I switched on the TV in the changing rooms of the first match (at Center Court), the women’s game, I saw Roger in the Royal Box, I didn’t know he was coming. I sent a message to my team saying, ‘Roger is in the box, I’m very difficult,'” said Fery, as quoted by the Daily Mail.“It’s amazing to be in a position where one of the greatest of all time is watching you, let alone watching me play five sets with Dimitrov on Center Court, Wimbledon,” he added.Fery’s impressive run at Wimbledon will catapult him into the top 100 in the world.He will then face ninth seed and French Open finalist Flavio Cobolli in the quarter-finals.Zverev and Federer played seven times before Federer retired. The 29-year-old German has a 4-3 lead in their head-to-head record.