Erin Cuthbert helped create the first goal before scoring the second
Goals from Bethany England and Erin Cuthbert sent Chelsea back to second in the Women's Super League table with victory against West Ham.
A shot from Cuthbert set substitute England up for the opener, with the striker poking home after Anna Leat spilled the initial effort.
Cuthbert then added a late second with a fine finish from the edge of the box.
West Ham failed to get a shot on target in response as their five-game unbeaten league run came to an end.
Chelsea's second victory against the Hammers in seven days - having got past their London rivals in the quarter-finals of the Women's Continental League Cup last week - sees them move to within a point of leaders Arsenal.
- Relive Chelsea's WSL win against West Ham
The Gunners, however, can restore their four-point lead at the summit if they beat Brighton on Thursday.
Chelsea had slipped to third place following Sunday's goalless draw against Brighton and were again frustrated in the first half against the Hammers.
Sophie Ingle saw a misdirected cross come off the top of the bar for the hosts while West Ham goalkeeper Leat made a fine reflex save to deny Pernille Harder before the break.
England made an immediate impact after coming off the bench, reacting quickest in the 51st minute to score her 50th WSL goal when Leat failed to control her save from a fierce 20-yard Cuthbert shot.
The excellent Cuthbert then got a deserved second for the league champions eight minutes from time, linking up with Fran Kirby on the edge of the area before sending a dipping effort beyond the keeper.
- Line-upsMatch StatsLive Text
Line-upsChelsea Women
Formation 3-4-3
30Berger21Charles4Bright3Nouwen22Cuthbert25Andersson5Ingle11Reiten17Fleming23Harder14Kirby
- 30Berger21Charles4Bright3Nouwen22Cuthbert25Andersson5Ingle11ReitenSubstituted forEnglandat 45'minutes17FlemingSubstituted forCarterat 73'minutes23HarderSubstituted forSpenceat 83'minutes14KirbySubstituted forAbdullinaat 86'minutes
Substitutes
- 1Musovic7Carter9England19James24Spence27Abdullina
West Ham Women
Formation 3-5-2
18Leat15Parker22Fisk23Cissoko2Wyne17Filis8Snerle10Svitková12Longhurst9Walker7Evans
- 18Leat15ParkerBooked at 17mins22Fisk23CissokoBooked at 20mins2Wyne17FilisSubstituted forStringerat 70'minutes8Snerle10Svitková12Longhurst9Walker7Evans
Substitutes
- 4Stringer5Flaherty20Joel24Cairns26Moore33Houssein
Referee:Ryan AtkinAttendance:2,554Match StatsHome TeamChelsea WomenAway TeamWest Ham WomenPossessionHome57%Away43%ShotsHome19Away3Shots on TargetHome10Away0CornersHome6Away1FoulsHome6Away8Live TextPost update
Match ends, Chelsea Women 2, West Ham United Women 0.
90'+5'Full Time
Second Half ends, Chelsea Women 2, West Ham United Women 0.
90'+1'Post update
Foul by Alsu Abdullina (Chelsea Women).
90'+1'Post update
Zaneta Wyne (West Ham United Women) wins a free kick in the defensive half.
86'Substitution
Substitution, Chelsea Women. Alsu Abdullina replaces Fran Kirby.
85'Post update
Attempt missed. Drew Spence (Chelsea Women) right footed shot from the centre of the box misses to the left. Assisted by Fran Kirby.
84'Post update
Foul by Bethany England (Chelsea Women).
84'Post update
Hawa Cissoko (West Ham United Women) wins a free kick in the defensive half.
83'Substitution
Substitution, Chelsea Women. Drew Spence replaces Pernille Harder.
82'goalGoal!
Goal! Chelsea Women 2, West Ham United Women 0. Erin Cuthbert (Chelsea Women) left footed shot from outside the box to the bottom right corner. Assisted by Fran Kirby.
81'Post update
Attempt blocked. Bethany England (Chelsea Women) right footed shot from the centre of the box is blocked. Assisted by Fran Kirby.
77'Post update
Fran Kirby (Chelsea Women) wins a free kick in the attacking half.
77'Post update
Foul by Lisa Evans (West Ham United Women).
74'Post update
Corner, Chelsea Women. Conceded by Katerina Svitková.
73'Substitution
Substitution, Chelsea Women. Jessica Carter replaces Jessie Fleming.
70'Substitution
Substitution, West Ham United Women. Abbey-Leigh Stringer replaces Melisa Filis.
69'Post update
Attempt saved. Erin Cuthbert (Chelsea Women) left footed shot from outside the box is saved in the centre of the goal. Assisted by Fran Kirby.
67'Post update
Corner, Chelsea Women. Conceded by Melisa Filis.
62'Post update
Foul by Sophie Ingle (Chelsea Women).
62'Post update
Emma Snerle (West Ham United Women) wins a free kick in the defensive half.
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Source: bbc.com