Chelsea secured top spot in Champions League Group E as Demba Ba scored the only goal in a straightforward win over Steaua Bucharest at Stamford Bridge.

The Senegal striker, 28, turned in Oscar's flick-on after the hosts dominated the opening 10 minutes.

Gabriel Iancu squandered a fine, and rare, chance to equalise for Steaua as he miscued when one-on-one soon after.

Chelsea should have increased their winning margin, with Ba and Eden Hazard guilty of particularly glaring misses.

The Blues will be paired with one of Bayer Leverkusen, Galatasaray, Olympiakos, Zenit St Petersburg or AC Milan when the draw for the last 16 is made in the Swiss city of Nyon on 16 December.

Top of the table

Frank Lampard and the Champions League trophy

This is the ninth time Chelsea have won their group in the Champions League.

The last time was in 2011-12 when they topped a group ahead of Bayer Leverkusen, Valencia and Genk.

They went on to lift the trophy.

However they will need sharper form than was required against Steaua if they are to get close to replicating their 2012 success.

In the build-up to their final group game, Jose Mourinho had called on his side to be more ruthless in front of goal.

While Chelsea again created plenty of chances, particularly in the first 10 minutes, they failed to capitalise.

David Luiz and Oscar had both shot wide before Ba bundled the ball into the net at the far post after Oscar rose unchallenged to flick Willian's corner through the six-yard box.

Mourinho had also insisted that Chelsea's concession of three goals in both of their previous two matches was down to bad luck rather than poor defending.

Steaua's outstanding chance of the match, however, was at least partly self-inflicted.

John Obi Mikel gave the ball away and, with Luiz caught upfield, neither John Terry nor Frank Lampard tracked Iancu's diagonal run and were relieved to see the teenage striker scuff his shot wide as goalkeeper Mark Schwarzer advanced.

Chelsea continued to create and waste chances, with Branislav Ivanovic's header pushed over the top by Ciprian Tatarusanu before Frank Lampard volleyed wide from the edge of the box.

But they still looked vulnerable at the back when their Romanian opponents, albeit infrequently, attacked.

Patelis Kapetanos's pot-shot from 25 yards fizzed off target after he had shrugged off Terry's attention.

Willian's performance, full of penetrative passing, was one of the pluses for Chelsea in the first-half and the Brazilian's precise cross after the break deserved more than to be blazed over the top via Ba's shin.

Andre Schurrle, who had tormented Daniel Georgievski in Chelsea's 4-0 win in the reverse fixture, had an instant impact against the Steaua right-back again when he came off the bench.

After tricking his way to the byeline, the Germany international's low shot looped up invitingly for Hazard to convert, but the Belgian could not react quickly enough to keep his header on target.

With Schalke beating Basel in the group's other game, a first victory in eight attempts in England for the Romanians would have toppled Chelsea from top spot.

But in truth, that never looked likely as Mourinho's men got the job done.

Check out a gallery of the match action on the BBC Sport Facebook page. 

Lineup, Bookings (4) & Substitutions (6)

Chelsea

  • 23 Schwarzer
  • 02 Ivanovic Booked
  • 03 Cole
  • 12 Mikel Booked (Ramires - 74' )
  • 04 David Luiz
  • 26 Terry
  • 22 Willian (De Bruyne - 80' )
  • 08 Lampard
  • 19 Ba
  • 11 Oscar (Schürrle - 67' )
  • 17 Hazard

Substitutes

  • 01 Cech
  • 07 Ramires
  • 09 Torres
  • 10 Mata
  • 14 Schürrle
  • 15 De Bruyne
  • 24 Cahill

Steaua Bucharest

  • 12 Tatarusanu
  • 17 Georgievski Booked
  • 14 Latovlevici Booked
  • 05 Pintilii (Leandro Tatu - 64' )
  • 04 Szukala
  • 06 Gardos
  • 07 Chipciu
  • 80 Iancu
  • 35 Kapetanos (Piovaccari - 71' )
  • 23 Stanciu (Prepelita - 61' )
  • 22 Parvulescu

Substitutes

  • 01 Nita
  • 11 Prepelita
  • 19 Cristea
  • 20 Leandro Tatu
  • 25 Piovaccari
  • 26 Neagu
  • 33 Varela
Ref: Gianluca Rocchi

Match Stats

Shots

18 9

On target

5 2

Corners

14 1

Fouls

10 15

Live Text Commentary

Full time

Full Time Match ends, Chelsea 1, Steaua Bucharest 0.

90:00 +4:00 Full time

Full Time Second Half ends, Chelsea 1, Steaua Bucharest 0.

90:00 +3:14

John Terry (Chelsea) wins a free kick in the defensive half.

90:00 +3:14

Foul by Leandro Tatu (Steaua Bucharest).

90:00 +2:22

David Luiz (Chelsea) wins a free kick in the attacking half.

90:00 +2:22

Foul by Leandro Tatu (Steaua Bucharest).

90:00 +1:10

Attempt blocked. Ramires (Chelsea) right footed shot from outside the box is blocked. Assisted by Kevin De Bruyne.

90:00 +0:38

Attempt saved. Alexandru Chipciu (Steaua Bucharest) right footed shot from outside the box is saved in the centre of the goal. Assisted by Paul Parvulescu.

90:00 +0:01

Corner, Steaua Bucharest. Conceded by Branislav Ivanovic.

88:47

Corner, Chelsea. Conceded by Lukasz Szukala.

88:24

Attempt blocked. Ramires (Chelsea) left footed shot from outside the box is blocked. Assisted by Andre Schürrle.

88:20

Attempt blocked. Andre Schürrle (Chelsea) right footed shot from the left side of the box is blocked. Assisted by Branislav Ivanovic with a headed pass.

87:19

Demba Ba (Chelsea) wins a free kick on the right wing.

87:19

Foul by Florin Gardos (Steaua Bucharest).

86:52

Offside, Chelsea. Frank Lampard tries a through ball, but Demba Ba is caught offside.

86:32

Corner, Chelsea. Conceded by Lukasz Szukala.

83:08

John Terry (Chelsea) wins a free kick in the defensive half.

83:08

Foul by Federico Piovaccari (Steaua Bucharest).

79:04 Substitution

Substitution Substitution, Chelsea. Kevin De Bruyne replaces Willian.

78:53

Foul by Willian (Chelsea).

78:53

Iasmin Latovlevici (Steaua Bucharest) wins a free kick in the defensive half.

77:48 Booking

Booking Iasmin Latovlevici (Steaua Bucharest) is shown the yellow card for a bad foul.

77:41

Willian (Chelsea) wins a free kick in the attacking half.

77:41

Foul by Iasmin Latovlevici (Steaua Bucharest).

76:25

Foul by Andre Schürrle (Chelsea).

76:25

Iasmin Latovlevici (Steaua Bucharest) wins a free kick on the left wing.

75:45

Foul by John Terry (Chelsea).

75:45

Federico Piovaccari (Steaua Bucharest) wins a free kick in the defensive half.

74:52

Attempt missed. Eden Hazard (Chelsea) right footed shot from outside the box is high and wide to the right. Assisted by Ashley Cole.

73:49 Substitution

Substitution Substitution, Chelsea. Ramires replaces John Obi Mikel.

72:11

Attempt saved. Federico Piovaccari (Steaua Bucharest) left footed shot from the right side of the box is saved in the bottom right corner. Assisted by Leandro Tatu.

70:39

Branislav Ivanovic (Chelsea) wins a free kick in the defensive half.

70:39

Foul by Federico Piovaccari (Steaua Bucharest).

70:26 Substitution

Substitution Substitution, Steaua Bucharest. Federico Piovaccari replaces Pantelis Kapetanos.

69:56

Attempt missed. Eden Hazard (Chelsea) header from very close range is just a bit too high. Assisted by Demba Ba.

69:54

Attempt saved. Andre Schürrle (Chelsea) right footed shot from a difficult angle on the left is saved in the bottom right corner. Assisted by Eden Hazard.

68:51

Eden Hazard (Chelsea) wins a free kick in the defensive half.

68:51

Foul by Andrei Prepelita (Steaua Bucharest).

66:06 Substitution

Substitution Substitution, Chelsea. Andre Schürrle replaces Oscar.

63:26 Substitution

Substitution Substitution, Steaua Bucharest. Leandro Tatu replaces Mihai Pintilii.

63:00

Attempt missed. Gabriel Iancu (Steaua Bucharest) left footed shot from outside the box is high and wide to the left. Assisted by Pantelis Kapetanos.

62:27

Foul by Eden Hazard (Chelsea).

62:27

Paul Parvulescu (Steaua Bucharest) wins a free kick in the defensive half.

61:12

Foul by Willian (Chelsea).

61:12

Florin Gardos (Steaua Bucharest) wins a free kick in the defensive half.

60:04 Substitution

Substitution Substitution, Steaua Bucharest. Andrei Prepelita replaces Nicolae Claudiu Stanciu.

59:32

Attempt missed. Mihai Pintilii (Steaua Bucharest) right footed shot from outside the box misses to the left.

58:23

Eden Hazard (Chelsea) wins a free kick on the left wing.

58:23

Foul by Alexandru Chipciu (Steaua Bucharest).

52:01

Attempt missed. Demba Ba (Chelsea) left footed shot from very close range is too high. Assisted by Willian with a cross.

50:14 Booking

Booking Daniel Georgievski (Steaua Bucharest) is shown the yellow card for a bad foul.

50:13

Delay over. They are ready to continue.

49:23

Delay in match Daniel Georgievski (Steaua Bucharest) because of an injury.

48:40

Ashley Cole (Chelsea) wins a free kick in the defensive half.

48:40

Foul by Daniel Georgievski (Steaua Bucharest).

47:39

Willian (Chelsea) wins a free kick on the right wing.

47:39

Foul by Gabriel Iancu (Steaua Bucharest).

47:00 Booking

Booking Branislav Ivanovic (Chelsea) is shown the yellow card for a bad foul.

46:50

Foul by Branislav Ivanovic (Chelsea).

46:50

Mihai Pintilii (Steaua Bucharest) wins a free kick in the defensive half.

45:00

Second Half begins Chelsea 1, Steaua Bucharest 0.

45:00 +0:03 Half time

Half Time First Half ends, Chelsea 1, Steaua Bucharest 0.

44:24

Attempt missed. Frank Lampard (Chelsea) right footed shot from outside the box misses to the left.

39:49

Foul by Oscar (Chelsea).

39:49

Daniel Georgievski (Steaua Bucharest) wins a free kick in the defensive half.

39:34

Attempt saved. Ashley Cole (Chelsea) left footed shot from outside the box is saved in the centre of the goal.

39:17

Corner, Chelsea. Conceded by Lukasz Szukala.

37:43

Dangerous play by Demba Ba (Chelsea).

37:43

Ciprian Tatarusanu (Steaua Bucharest) wins a free kick in the defensive half.

37:16

Corner, Chelsea. Conceded by Alexandru Chipciu.

36:29

Attempt missed. Frank Lampard (Chelsea) right footed shot from outside the box is just a bit too high. Assisted by Willian.

35:01

Attempt missed. Pantelis Kapetanos (Steaua Bucharest) left footed shot from outside the box is close, but misses to the left. Assisted by Paul Parvulescu.

34:24

Offside, Chelsea. Willian tries a through ball, but Demba Ba is caught offside.

31:31

Frank Lampard (Chelsea) wins a free kick in the defensive half.

31:31

Dangerous play by Mihai Pintilii (Steaua Bucharest).

30:32

Attempt blocked. Nicolae Claudiu Stanciu (Steaua Bucharest) right footed shot from outside the box is blocked. Assisted by Mihai Pintilii.

28:53

Eden Hazard (Chelsea) wins a free kick in the defensive half.

28:53

Foul by Daniel Georgievski (Steaua Bucharest).

27:19

Attempt missed. Frank Lampard (Chelsea) right footed shot from outside the box is close, but misses the top right corner. Assisted by Willian with a cross following a corner.

26:42

Corner, Chelsea. Conceded by Ciprian Tatarusanu.

26:40

Attempt saved. Branislav Ivanovic (Chelsea) header from very close range is saved in the top centre of the goal. Assisted by Eden Hazard with a cross.

26:16

Corner, Chelsea. Conceded by Lukasz Szukala.

23:27

Attempt missed. Mihai Pintilii (Steaua Bucharest) right footed shot from more than 35 yards is high and wide to the right. Assisted by Paul Parvulescu.

21:51

Corner, Chelsea. Conceded by Daniel Georgievski.

20:27

Attempt blocked. Iasmin Latovlevici (Steaua Bucharest) left footed shot from outside the box is blocked. Assisted by Nicolae Claudiu Stanciu.

19:40 Booking

Booking John Obi Mikel (Chelsea) is shown the yellow card for a bad foul.

19:38

Foul by John Obi Mikel (Chelsea).

19:38

Gabriel Iancu (Steaua Bucharest) wins a free kick in the attacking half.

18:42

Foul by Frank Lampard (Chelsea).

18:42

Lukasz Szukala (Steaua Bucharest) wins a free kick in the defensive half.

16:20

Attempt saved. Branislav Ivanovic (Chelsea) right footed shot from the centre of the box is saved in the centre of the goal. Assisted by Frank Lampard with a cross.

15:45

Oscar (Chelsea) wins a free kick in the attacking half.

15:45

Foul by Florin Gardos (Steaua Bucharest).

14:46

John Obi Mikel (Chelsea) wins a free kick in the defensive half.

14:46

Foul by Mihai Pintilii (Steaua Bucharest).

12:24

Attempt missed. Gabriel Iancu (Steaua Bucharest) left footed shot from outside the box is close, but misses to the right. Assisted by Nicolae Claudiu Stanciu with a through ball following a fast break.

11:45

Corner, Chelsea. Conceded by Lukasz Szukala.

9:29 Goal scored

Goal! Goal! Chelsea 1, Steaua Bucharest 0. Demba Ba (Chelsea) right footed shot from very close range to the bottom left corner. Assisted by Oscar with a headed pass following a corner.

9:04

Corner, Chelsea. Conceded by Lukasz Szukala.

8:37

Corner, Chelsea. Conceded by Iasmin Latovlevici.

8:21

Corner, Chelsea. Conceded by Lukasz Szukala.

7:23

Eden Hazard (Chelsea) wins a free kick on the left wing.

7:23

Foul by Alexandru Chipciu (Steaua Bucharest).

5:19

Attempt blocked. Frank Lampard (Chelsea) right footed shot from a difficult angle and long range on the left is blocked. Assisted by Eden Hazard.

5:03

Corner, Chelsea. Conceded by Florin Gardos.

4:41

Corner, Chelsea. Conceded by Daniel Georgievski.

3:52

Attempt blocked. John Obi Mikel (Chelsea) left footed shot from outside the box is blocked.

3:18

Attempt missed. Oscar (Chelsea) right footed shot from outside the box is close, but misses to the right. Assisted by Willian.

2:35

Attempt missed. David Luiz (Chelsea) right footed shot from the centre of the box is close, but misses to the right. Assisted by Willian with a cross following a corner.

2:13

Corner, Chelsea. Conceded by Paul Parvulescu.

0:00

First Half begins.

0:00

Lineups are announced and players are warming up.

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