Rafael Nadal is being celebrated during a ceremony in the main stadium of the French Open on Day 1 of the tournament.

Retired star Rafael Nadal honored at French Open with "Merci Rafa" shirts and presence of rivals Andy Murray, Roger Federer and Novak Djokovic.

The ceremony for Nadal included the surprise of having Federer and Murray on hand, who joined him along with Djokovic on the court. It was a reunion of tennis’ Big Four.

Ben Shelton beat Lorenzo Sonego for the second straight time at a Grand Slam this year, winning 6-4, 4-6, 3-6, 6-2, 6-3 under floodlights to reach the second round of the French Open.

French Open organisers handed out 10,000 brick-red T-shirts for Sunday's tribute to 14-times Roland Garros champion Rafael Nadal on Monday and while most people took the souvenir home, several tried to sell them online for up to 500 euros.

The second of tennis' Grand Slam events gets underway on May 25 with the start of the French Open. The clay-court tournament is one where a slower surface speed puts an emphasis on the ability to win extended rallies and play off the baseline rather than relying on a dominant serve.

Follow live text and BBC 5 live radio commentary from the French Open at Roland-Garros, the second Grand Slam tournament of the year.