Angel Di Maria celebrates scoring a goal for PSG. They are away to Marseille this weekend.The French Ligue 1 enters its 27th week fro today, as the race to wrestle the title from PSG continues. The champions are second on the log, three points behind leaders Monaco, and they take a tricky trip to Marseille, while Monaco are at mid-table Guingamp in what could be a defining weekend.Monaco are coming on the back of a thrilling 5-3 loss to Manchester City in the Champions League in midweek, and will be buoyed with the challenge of returning to winning ways, after they were also held to a 1-1 draw last weekend by Bastia.Read also: See the candidates to coach Musa, Ndidi after Ranieri's sackThe Principality club is the highest-scoring side in Ligue 1, and will fancy their chances of putting as many goals as possible behind Guingamp, especially with the good form of Radamel Falcao and Kylian Mbappe.PSG, on the other hand, face a more daunting task against a tricky Marseille side. The Parisiens were held to a 0-0 draw by Tououse last weekend, as they failed to capitalize on Monaco’s draw. However, they can count on Angel Di Maria, who appears to be in good form, as well as Edinson Cavani to carve open the Marseille defence, which has conceded 31 goals so far. This is a low scoring Marseille side, with only 35 goals to their credit, but Rudi Garcia has assembled a decent side.Fourth-placed Lyon host struggling Metz, and they go into this game with much confidence, having dispatched AZ Alkmaar 7-1 on aggregate in the Europa League on Thursday. Striker Alexander Lacazette has netted 21 goals this term for Bruno Genesio’s side, and are huge favourites, but win or lose, they will remain in fourth as they are 13 points adrift of Nice in third, and four points ahead of St Etienne in fifth.Mid-table teams, Bordeaux, Toulouse, Rennes and Montpellier are also all in action this weekend.At the base of the table, Lorient will have another chance to stake a claim to remain in Ligue 1 when they visit Rennes, but it doesn’t look good for the bottom club, who have only garnered 22 points from 26 games and have conceded 52 goals.Bastia will hope to build on last week’s draw with Monaco when they visit Angers, and could climb out of the drop zone if they win, but subject to what Nancy and Dijon play out.Metz, Caen and Lille are outside the drop zone at the moment, but they are not too far off and poor results this weekend could see them drop further down the ladder.