The 10 players who can stop Rafael Nadal's bid for French Open title No 12 - in pictures
Stefanos Tsitsipas, Dominic Thiem and world No 1 Novak Djokovic are among the players who can trouble defending champion Rafael Nadal at Roland Garros
Stan Wawrinka (No 24 seed). A bit of a long shot, the three-time major winner's best days are probably behind him at the age of 34. But he is a past French Open winner and if he can find his range he can still be a force to be reckoned with. AP Photo
Roberto Bautista Agut (No 18 seed). Again a tall order given Bautista Agut has never won a set, let alone a match, off his Spanish compatriot. But Bautista Agut is a steely opponent and he can cause Nadal problems with his tenacity and ability to drag out long rallies if their paths do cross. Reuters
Diego Schwartzman (No 17 seed). The Argentine's best surface is clay and he could be a possible quarter-final opponent for Nadal. That would be a rematch from last year when he took the first set of the world No 2. Could be equally troublesome again. Reuters
Fabio Fognini (No 9 seed). The Italian is always a tough opponent on clay and he goes to Paris galvanised by beating Nadal emphatically 6-4, 6-2 on his way to winning his first career Masters title in Monte Carlo. Reuters
Juan Martin del Potro (No 8 seed). This might be a big ask for the Argentine, given his injury hit start to 2019. But he can be competitive on clay and he has a history of pushing Nadal to the limit whenever they share the same court. Reuters
Stefanos Tsitsipas (No 6 seed). The breakout star of 2019 is a possible semi-final opponent for Nadal. Can be a real handful when he is at his best. His three-set win over Nadal in Madrid earlier in May means his threat on clay is a very genuine one. Getty
Alexander Zverev (No 5 seed). The German has underwhelmed so far in his career at the grand slams. That has to change, given his talent, at some point and there is no reason why he can't reach the final to take on Nadal other then his own temperament. AFP
Dominic Thiem (No 4 seed). The only man to beat Nadal on clay in 2017 and 2018 did it again in Barcelona in April, with the 6-4, 6-4 result actually flattering the Spaniard. They are in opposing sides of the draw and if they meet it will be a repeat of the 2018 final. Nadal won that comfortably but Thiem is a much more confident opponent a year later. Reuters
Roger Federer (No 3 seed). The Swiss returns to Roland Garros for the first time since 2015. The 2009 champion has never beat Nadal at the tournament, but has pushed him at times. A tough ask for him, but a Federer v Nadal semi-final meeting would be a real crowd pleaser. Getty
Novak Djokovic (No 1 seed). The Serbian looks to complete a second 'Djoker' slam by holding all four major titles at once if he can prevail here. Started slowly on clay but won in Barcelona and pushed Nadal hard in the Rome final. He knows, after 2015, he can beat Nadal in Paris and a second French Open title is tantalisingly close for the world No 1. Getty
Rafael Nadal is going for a 12th French Open title when the action at Roland Garros begins on Sunday.
The Spaniard's record in Paris has been one of the most dominant in tennis history. He has only lost twice in 88 matches played at the tournament, with Robin Soderling (2009) and Novak Djokovic (2015) the only two men to have ever beaten him on court.
The 32 year old starts as a strong favourite to win the event again but he has looked more fallible then of late on clay this year.
Victory in Rome earlier in May, beating Djokovic in the final, was the only one of the clay swing competitions he won, a poor return by his high standards.
Here is a look in the photo gallery above at the players who can prevent Nadal prevailing at the French Open this year.
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Updated: May 25, 2019 12:40 PM