Monaco moved back up to second place in Ligue 1 with a hard-fought 1-0 win over 10-man Ajaccio at the Stade Louis II.
Emmanuel Riviere's eighth goal of the season, with 15 minutes left, was enough for Claudio Ranieri's men after the visitors had Jean-Baptiste Pierazzi sent-off with an hour played.
Victory for Monaco, their fourth league win in a row, moved them back above Lille, who were beaten at Bordeaux earlier in the day, and closed the gap on leaders Paris St Germain back to two points.
As expected, Monaco dominated possession from the outset and almost made that dominance pay off when Anthony Martial brought the first save from Guillermo Ochoa as the 20-minute mark approached.
From the resulting set-piece, a face-masked Ricardo Carvalho saw his goalbound header cleared by Mehdi Mostefa as the hosts looked to turn the screw.
Ajaccio did threaten after half an hour when Junior Tallo forced a save from Daniel Subasic with a smart short which the Monaco No. 1 gathered at the second attempt before Layvin Kurzawa blazed high and wide at the other end.
Martial almost broke the deadlock shortly before half-time, but his acrobatic effort from Andrea Raggi's delivery failed to find the target and the scores remained level at the break.
Monaco's young forward Martial continued to look dangerous after the restart but failed to find the target from a useful position, this time heading wide after meeting Kurzawa's cross at the near post.
The one-way traffic continued into the second half, but the visitors continued to frustrate Ranieri's team when Ochoa pulled off a magnificent save to deny Carvalho's header from Joao Moutinho's corner.
However, Ajaccio's chances of holding out for the full 90 minutes took a turn for the worse when Pierazzi was shown a second yellow card with just over an hour gone for an ugly foul on James Rodriguez and the Corsicans were left to see out the remainder of the game with 10 men.
Monaco's numerical advantage soon made the difference as they finally broke down their resilient opponents with 15 minutes left.
Kurzawa was the provider, with his centre missed by both Moutinho and Valerie Germain before Raggi was on hand to send the ball across the goalmouth where Riviere poked it over the line.
Rodriguez almost doubled the hosts' lead five minutes later, but his free-kick came back off the post with Ochoa well beaten.