Willian went close for Chelsea on a couple of occasions in the first half
Marcos Alonso's second-half strike broke Newcastle's resistance as Chelsea moved up to third in the Premier League with their fifth successive win in all competitions.
The Blues seemed set for another frustrating day at Stamford Bridge after Tammy Abraham saw his header hit the bar and Martin Dubravka denied Christian Pulisic.
But they finally got their reward for relentless second-half pressure when Spanish left-back Alonso drove in a firm, angled shot in the 73rd minute.
They should have scored a second through Abraham, but the England international's shot was brilliantly blocked by DeAndre Yedlin.
Steve Bruce's Magpies were preoccupied with defending for much of the match and failed to test Kepa Arrizabalaga.
Defeat means they drop into the relegation zone, although their manager will point to the fact they have now played every one of the 'big six' in their first nine games, bar Manchester City.
More to follow.
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Relive the action from Stamford Bridge
Reaction from Saturday's Premier League games
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Line-ups
Match Stats
Live Text
Line-ups
Chelsea
1Arrizabalaga
28Azpilicueta
15Zouma
29TomoriBooked at 45mins
3AlonsoBooked at 23mins
8BarkleySubstituted forKovacicat 43'minutes
5Jorginho
19MountSubstituted forPulisicat 64'minutes
10Willian
9Abraham
20Hudson-OdoiSubstituted forJamesat 90+2'minutes
Substitutes
13Caballero
17Kovacic
18Giroud
22Pulisic
23Batshuayi
24James
44Guehi
Newcastle
1Dubravka
22Yedlin
5Schär
6Lascelles
2ClarkBooked at 43mins
15Willems
24AlmirónSubstituted forCarrollat 70'minutes
43M Longstaff
36S Longstaff
10Saint-MaximinSubstituted forGayleat 85'minutes
9JoelintonSubstituted forAtsuat 83'minutes
Substitutes
3Dummett
7Carroll
8Shelvey
12Gayle
17Krafth
26Darlow
30Atsu
Referee:
Andre Marriner
Attendance:
40,513
Match Stats
Home TeamChelseaAway TeamNewcastle
Possession
Home71%
Away29%
Shots
Home16
Away5
Shots on Target
Home8
Away0
Corners
Home11
Away0
Fouls
Home9
Away12
Live Text
Posted at
Match ends, Chelsea 1, Newcastle United 0.
Full TimePosted at 90'+4'
Second Half ends, Chelsea 1, Newcastle United 0.
Posted at 90'+3'
Willian (Chelsea) wins a free kick on the left wing.
Posted at 90'+3'
Foul by Jamaal Lascelles (Newcastle United).
SubstitutionPosted at 90'+2'
Substitution, Chelsea. Reece James replaces Callum Hudson-Odoi.
Posted at 90'+1'
Foul by Callum Hudson-Odoi (Chelsea).
Posted at 90'+1'
DeAndre Yedlin (Newcastle United) wins a free kick in the defensive half.
Posted at 89'
Attempt missed. Ciaran Clark (Newcastle United) header from the centre of the box is just a bit too high. Assisted by Christian Atsu.
Posted at 86'
Foul by Kurt Zouma (Chelsea).
Posted at 86'
Andy Carroll (Newcastle United) wins a free kick in the defensive half.
SubstitutionPosted at 85'
Substitution, Newcastle United. Dwight Gayle replaces Allan Saint-Maximin.
Posted at 83'
Corner, Chelsea. Conceded by Martin Dubravka.
SubstitutionPosted at 83'
Substitution, Newcastle United. Christian Atsu replaces Joelinton.
Posted at 82'
Attempt missed. Jetro Willems (Newcastle United) right footed shot from the left side of the box is high and wide to the right. Assisted by Allan Saint-Maximin with a cross.
Posted at 80'
Corner, Chelsea. Conceded by DeAndre Yedlin.
Posted at 80'
Attempt blocked. Tammy Abraham (Chelsea) right footed shot from the centre of the box is blocked. Assisted by Christian Pulisic.
Posted at 77'
Tammy Abraham (Chelsea) wins a free kick in the defensive half.
Posted at 77'
Foul by Matthew Longstaff (Newcastle United).
Posted at 76'
Attempt saved. Tammy Abraham (Chelsea) right footed shot from the left side of the box is saved in the centre of the goal.
Posted at 76'
Willian (Chelsea) wins a free kick on the right wing.
Posted at 76'
Foul by Jetro Willems (Newcastle United).
Goal!Posted at 73'
Goal! Chelsea 1, Newcastle United 0. Marcos Alonso (Chelsea) left footed shot from the left side of the box to the bottom right corner. Assisted by Callum Hudson-Odoi.
Posted at 73'
Attempt saved. Willian (Chelsea) right footed shot from a difficult angle on the right is saved in the centre of the goal. Assisted by Marcos Alonso with a headed pass.
SubstitutionPosted at 70'
Substitution, Newcastle United. Andy Carroll replaces Miguel Almirón.
Posted at 68'
Corner, Chelsea. Conceded by Fabian Schär.
Posted at 68'
Attempt saved. Christian Pulisic (Chelsea) left footed shot from the centre of the box is saved in the bottom right corner.
Posted at 68'
Attempt blocked. Callum Hudson-Odoi (Chelsea) right footed shot from the left side of the box is blocked. Assisted by Willian.
Posted at 66'
Attempt missed. Tammy Abraham (Chelsea) header from the centre of the box is just a bit too high. Assisted by Callum Hudson-Odoi with a cross following a corner.
Posted at 66'
Corner, Chelsea. Conceded by Matthew Longstaff.
SubstitutionPosted at 64'
Substitution, Chelsea. Christian Pulisic replaces Mason Mount.
Posted at 62'
Tammy Abraham (Chelsea) wins a free kick on the right wing.
Posted at 62'
Foul by Jamaal Lascelles (Newcastle United).
Posted at 59'
Corner, Chelsea. Conceded by Fabian Schär.
Posted at 57'
Attempt missed. Fikayo Tomori (Chelsea) right footed shot from the centre of the box misses to the left following a set piece situation.
Posted at 57'
Willian (Chelsea) wins a free kick on the right wing.
Posted at 57'
Foul by Matthew Longstaff (Newcastle United).
Posted at 56'
Attempt blocked. Tammy Abraham (Chelsea) header from the centre of the box is blocked. Assisted by Willian with a cross.
Posted at 56'
Corner, Chelsea. Conceded by Ciaran Clark.
Posted at 55'
Corner, Chelsea. Conceded by DeAndre Yedlin.
Posted at 53'
Attempt saved. Kurt Zouma (Chelsea) header from the centre of the box is saved in the bottom left corner. Assisted by Mason Mount with a cross.
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Source: bbc.com