Rafael Nadal is the 2/1 favourite to claim a 10th Monte Carlo Masters – but he will have to overcome some serious opposition to do so.
The Spaniard has been drawn in the same half as Novak Djokovic, Dominic Thiem and Grigor Dimitrov as he attempts to secure a 50th clay-court title.
Nadal’s first match will be against either Dan Evans or Kyle Edmund, with the British duo meeting for the first time on the ATP Tour.
The 30-year-old from Mallorca has dominated the tournament over the years, winning a record 46 matches in a row between 2005-2013, playing the most matches (60), winning the most matches (56) and reaching the most finals (10).
Nadal claimed the title for a ninth time last year by beating Gael Monfils in the final after a three-year run without any success.
Djokovic, who overcame Nadal in the 2013 showpiece before winning again in 2015, is the 12/5 second favourite and will meet Gilles Simon or Malek Jaziri in his first match.
World number one Andy Murray makes his return from an elbow injury and will take on Gilles Muller or wild card Tommy Robredo in the second round.
Murray advanced to the semi-finals in 2009, 2011 and 2016 and is 11/2 to lift a first title at this event.
Stan Wawrinka, the 2014 champion, has been drawn against Mischa Zverev or Jiri Vesely in the second round and is quoted at 7/1 to go all the way again.
Thiem is 23/1 while Dimitrov and Alexander Zverev are 30/1.