Substitute Erwan Colas scored a 90th-minute equaliser as Le Mans held Monaco to a 1-1 draw on Sunday, extending the visitors' winless run in Ligue 1 to five matches.

Monaco looked set to end their poor run of league form when Mamadou Coulibaly put them ahead in the 40th minute at Stade Marie-Marvingt, but Colas struck from a corner late on to earn the promoted hosts a valuable point and lift them to 15th in the table, outside the relegation zone.

The result leaves Monaco seventh in Ligue 1, still searching for a first league win in five attempts after last weekend's 3-1 defeat at Paris FC. Le Mans, meanwhile, collected only their second point since 19 September.

Monaco's opener came from a mistake at the back. A back pass from Harold Voyer was not controlled by Le Mans goalkeeper Nicolas Kocik, who had gone down with a muscular injury moments earlier, and Coulibaly was quickest to react, tackling the ball home from close range.

Le Mans had already seen two goals ruled out before the break. Matthis Abline finished into an empty net from an Aleksandr Golovin pass, only for the move to be pulled back for offside, and Dame Gueye also had a flicked header disallowed for offside in a call that looked less clear-cut.

Despite those setbacks, the hosts were the more enterprising side after the interval. Monaco made an attacking triple change in an attempt to add thrust to a side that lacked ideas, but they created little and were unable to put the game beyond reach.

Gueye saw a strike blocked by Sadibou Sane as Le Mans pressed, and the home side's persistence was rewarded in the final minute of normal time. Colas, introduced in the 66th minute, was in the right place during a goalmouth scramble and blasted the ball into the roof of the net.

The draw was a further frustration for Monaco, whose league form has stalled badly even while their results in Europe have continued to flow. The Principality club were unable to shine on the ball in Le Mans and, having failed to create the chances to kill the game off, were always at risk of letting the points slip.

For Le Mans, the point was hard-earned reward for a committed display against opponents with far greater resources. They defended with discipline, kept pushing after falling behind, and were rewarded with a late goal that moved them out of the relegation places.

Monaco now head into the international break needing to find answers for their domestic slide, while Le Mans will take confidence from a result that showed they can compete with the division's established sides.