Mauricio Pochettino's side have lost just one of their last 11 Premier League matches, last week's 5-0 thrashing at Arsenal, a run dating back to February.
Their recent upturn in form has seen the Blues solidify their place in the race for Europe.
Pochettino speaks out after Chelsea's brilliant 2-0 win over Spurs.mp4
It is a different story for West Ham, though, who are winless in three and have just one victory in their last eight league outings.
Last weekend's 2-2 draw against Liverpool halted a two-match losing run but the Hammers have dropped from seventh to ninth during their recent poor run.
What is the team news and any injuries to worry about?
Chelsea could welcome back Levi Colwill (ankle), Raheem Sterling (back) and Christopher Nkunku (thigh) on Sunday.
All three players face late fitness tests to make the matchday squad, but the fixture is expected to come too soon for Reece James to appear.
Axel Disasi and Thiago Silva are the latest to join the injury list, though, with eight other players sidelined.
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Sunday's match is set to come too soon for Reece James' return from injuryCredit: Getty
West Ham have no new injury concerns and Aguerd may be able to return from an ankle issue.
Meanwhile, Konstantinos Mavropanos is also being assessed after missing their last two matches.
Who will be the star men?
Cole Palmer has been Chelsea's standout performer this season after signing from Manchester City last summer.
The midfielder has scored 20 league goals this season, despite failing to score in his last three, with only Erling Haaland scoring more.
Prior to the win over Spurs, Palmer had scored seven goals across his previous two home league appearances.
Fellow England international Jarrod Bowen has also impressed for West Ham this term.
His goal and assist last weekend has taken the 27-year-old's goal contributions tally to 22 in the league.
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What have the managers said?
Speaking after the win over Spurs, Pochettino said: "The first half was fantastic. Then you have to contain and suffer. Tottenham have quality players. Not too much to say, all credit to the players."
SunSport prediction
Chelsea and West Ham come into the match in varying runs of form.
The Blues appear to have timed their push to Europe to perfection, whilst the Hammers are fading after their exit from the Europa League.
Pochettino will hope his side can move into the top seven this weekend.
SunSport prediction: 2-0
When is Chelsea vs West Ham?
Chelsea's clash with West Ham takes place this weekend on Sunday, May 6.
The game will be held at Stamford Bridge and kicks off at 2pm BST.
West Ham beat Chelsea 3-1 the last time they played back in August.
Is Chelsea vs West Ham on TV?
Chelsea's clash with West Ham will NOT be shown on TV in the UK.
The game hasn't been selected for broadcast in the 2pm slot on Sunday, May 6.
Brighton vs Aston Villa will be shown at 2pm on Super Sunday instead.
Odds
Chelsea - 3/5
Draw - 16/5
West Ham - 15/4
*Odds courtesy of Ladbrokes and correct at time of publication.
Good evening and welcome to Chelsea vs West Ham, the first instalment of today's football!
This is a fixture we are used to seeing be dominated by the boys in blue, but generally speaking this fixture has been a close one in recent seasons, and it's a crucial game in the European hopes of both teams this time around.
It has been a mixed bag for West Ham this season, but they have generally performed well, sitting five points away from a spot in the Europa Conference league.
They have struggled in the league of late though, with two losses to Fulham and Crystal Palace and a draw to Liverpool in their last three games.
The same can be said for Chelsea in terms of results being mixed, but they have generally been quite good since Christmas, and picked up a great win against Spurs last time out.
Stay tuned as coming right up SunSport will have any breaking news, team updates and the starting sides all before kick off at 2pm.
Chelsea face off against West Ham at home todayCredit: Alamy
