Arsenal beat West Ham at the Emirates but now face their toughest test of the season in Monaco on Tuesday night.
Arsenal moved to within one point of second-placed Manchester City with a comfortable 3-0 victory over West Ham on Saturday.
Olivier Giroud, Aaron Ramsey and Mathieu Flamini struck as the Gunners continued their excellent domestic form which has seen them win their last five league games and reach the FA Cup semi-finals.
However, their coveted Champions League place is hanging by a thread following a 3-1 home defeat to Monaco. They go into the second leg on Tuesday with a mountain to climb.
Taking the French club's recent form into account, Arsenal’s task becomes even tougher. In the last three and a half months in Ligue 1, the principality based club have been in sensational form.
In their 13 league games since the beginning of December, Monaco have conceded just two goals in Ligue 1.
Remarkably, Arsenal must score at least three times on Tuesday to have any chance of qualification, a tally which is more than Monaco have conceded in those last 13 domestic games.
To make matters worse, the French club have conceded just two goals in the Champions League this season too.
Arsenal will go into their second leg with hope and optimism after their recent form but Monaco’s defensive record this season is staggering, meaning if they manage to qualify, they will have achieved the seemingly impossible.