In pictures: King of Spain, Crown Prince of Norway and others watch French Open final between Rafael Nadal and Casper Ruud

A number of celebrities were in attendance for the French Open men's singles final between Rafael Nadal and Casper Ruud on Court Philippe-Chatrier on Sunday.

The King of Spain Felipe VI and Norway's Crown-Prince Haakon were seated next to one another as they watched the players from their respective nations compete for the Roland Garros crown.

King Felipe VI of Spain (L) and Norway's Crown Prince Haakon

Oscar-winning actor and producer Michael Douglas was also spotted in the crowd.

Actors Hugh Grant and Sienna Miller were also present for the French Open final between Nadal and Ruud. Miller was also spotted during the semifinal between the King of Clay and Alexander Zverev.

Hugh Grant and Sienna Miller during the French Open final

Footballers Robert Lewandowski and Marco Verratti were in the crowd as well. The former was also present on Saturday to watch his fellow Pole Iga Swiatek win the women's singles title.

Another famous face in the crowd was three-time French Open champion Gustavo Kuerten, who was greeted with a round of applause.

Rafael Nadal and Casper Ruud's road to the French Open final

Rafael Nadal has beaten three Top 10 seeds en route to the French Open final.

Rafael Nadal and Casper Ruud had similar paths to the final The Spaniard started the tournament with comprehensive victories over Jordan Thompson, Corentin Moutet and Botic van de Zandschulp.

In the fourth round, Nadal beat ninth seed Felix Auger-Aliassime in a grueling five-set encounter. This set up a clash against old rival Novak Djokovic in the quarterfinals. The 36-year-old produced some scintillating tennis to beat the Serb in four sets and reach the semifinals.

Facing third seed Alexander Zverev, he took the opening set in a tie-break, saving four set points on the way. Just as the second set was heading to a tie-break as well, Zverev rolled his ankle and was forced to retire from the match, confirming Nadal's progression to the final.

Ruud, meanwhile, beat Jo-Wilfried Tsonga in the first round in the final match of the Frenchman's career. He then got the better of Emil Ruusuvuori in straight sets.

In the third round, Ruud beat Lorenzo Sonego in five sets before overcoming Hubert Hurkacz in four to reach his maiden Grand Slam quarterfinal. He beat Danish teenager Holger Rune 6-1, 4-6, 7-6(2), 6-3 to set up a semifinal clash against Marin Cilic. Ruud came back from a set down to defeat the Croat and reach his maiden Grand Slam final.

If Nadal triumphs on Sunday, he will become the oldest champion in the history of the tournament. He will also become only the second player in the tournament's history to beat four top-10 players en route to the title.