It appears that it won't be just Chelsea and Tottenham fighting it out for a top-four spot come the end of the season.
With the Blues having a huge 12-point advantage over their north London rivals back in November, the lead is now down to four points and they meet at Stamford Bridge later this month in what should be a mouth-watering clash.
However, Chelsea's recent poor run of results has left the door open for a number of other teams to clinch the final spot in Europe's elite competition.
Sheffield United are currently in fifth and two points behind Frank Lampard's side following Sunday's 2-1 win over Bournemouth, with Everton also moving up the table over the past few weeks after an upturn in results under Carlo Ancelotti.
Manchester United and Wolves are also right in the mix with 13 games to play and there will definitely be plenty of points won and lost between now and May.
Here we take a look at the league games that could prove pivotal in the race for the top four over the coming weeks.
Monday, February 17
Chelsea vs Manchester United
The Blues really are on a wretched run at the moment and they've opened the door for other clubs.
Given Spurs play before them next week, they really must win or there's a chance they will be leapfrogged by Jose Mourinho's side when they meet the following week.
Saturday, February 22
Chelsea vs Tottenham
Having whittled the lead down to three points before the side's met in N17 back in December, Spurs must ensure that they come out on top this time.
Stamford Bridge hasn't been kind to them in the past but they will be confident of getting a result this time based on recent form.
Sunday, March 1
Everton vs Manchester United
Tottenham vs Wolves
Everton could send a warning to clubs if they manage to get a result against the Red Devils have climbed into the top seven.
Spurs against Wolves is also a huge game for both clubs as they bid to seal a European spot come May.
Sunday, March 8
Chelsea vs Everton
Manchester United vs Man City
It's another huge day in the race for the top four with both Chelsea and Manchester United facing extremely tricky games.
Spurs will be hoping for favours from both Everton and Man City as they bid to clinch a place in Europe's elite competition for the fifth successive year.
Sunday, March 15
Tottenham vs Manchester United
There's another huge game in the top-four race the following week as Spurs and United meet at Tottenham Hotspur Stadium.
Spurs have done well at home under Mourinho so far and they will be hoping that record continues against his former side.
Monday, March 16
Everton vs Liverpool
It will be interesting to see where Everton are in the league table come the middle of March as they have some tough games coming up.
The Blues will be desperate to beat their Merseyside rivals and three points against the runaway league leaders would give them a huge boost for the rest of the season.
Saturday, March 21
Chelsea vs Man City
Manchester United vs Sheffield United
Chelsea will have to be at their best in their final game of the month as they host City.
The game at Old Trafford is also huge for both sides as they look to clinch a European place.
Saturday, April 4
Sheffield United vs Tottenham
Tipped to be in a relegation battle in their first season back in the Premier League, the Blades could well be playing in Europe next campaign if they finish the season strongly.
Bramall Lane is not an easy place to go and Spurs really will be tested in South Yorkshire.
Saturday, April 11
Tottenham vs Everton
Wolves vs Arsenal
It doesn't get any easier for Spurs a week later as Everton travel to north London.
Wolves may still be in the hunt for the top four by then and their game against Arsenal could have an impact on if they qualify for Europe or not.
Saturday, April 18
Sheffield United vs Wolves
This could also be a decisive fixture in the hunt for a European spot as Sheffield United and Wolves looks to cause an upset in the top six.
Saturday, April 25
Sheffield United vs Chelsea
Tottenham vs Arsenal
The first north London derby at Tottenham Hotspur Stadium takes place at the end of April as Arsenal make the short trip across the capital.
Another big game also takes place in South Yorkshire as Chelsea will be looking to ensure that they don't lose such a vital game that could prove crucial to their top-four hopes.
Saturday, May 9
Liverpool vs Chelsea
Sheffield United vs Everton
Tottenham vs Leicester City
The penultimate weekend of the season could prove crucial to who finishes in fourth.
Liverpool will not want to lose to Chelsea at Anfield on the day they pick up the league title, while one of or both Sheffield United and Everton could still potentially be in with a shout of Europe ahead of the final weekend.
Spurs against Leicester will also be big as the Foxes may need to pick up the points to guarantee a top-four finish after a drop in form of late.
Sunday, May 17
Chelsea vs Wolves
Crystal Palace vs Tottenham
Everton vs Bournemouth
Leicester City vs Manchester United
Southampton vs Sheffield United
It may go down to the wire in the race for a Champions League.
Chelsea will have it tough against Wolves in west London, while Spurs, Manchester United and Sheffield United will have to win away from home if they need the points on the final day.
Everton, providing that they are still high up the table, have the kindest fixture as they host Bournemouth at Goodison.
