Leicester ended Derby's three-match winning run as they comfortably came through this east midlands derby.
Darius Vassell had a goal disallowed for the Foxes before Andy King scored the opener when he slotted in after running on to Richie Wellens' pass.
The in-form Rams squandered chances to equalise with unmarked midfielder Paul Green nodding wastefully wide.
Striker Steven Howard secured the points from the penalty spot after Kyle Naughton was fouled by Kris Commons.
While the result stemmed the run of high-flying Derby, the three points meant Leicester have dragged themselves five points clear of the relegation zone.
The hosts started edgily before Vassell had the ball in the back of the net after Greg Cunningham's pass, only to be denied his club's first goal for offside.
The opening strike soon arrived on 13 minutes as King ran on from Wellens' through-ball to calmly slot in past keeper Frank Fielding and take his season tally to seven.
Commons came close with two long-range strikes for the visitors and then Green had their best opportunity to level when he headed Luke Moore's left-wing cross wide.
Fielding had to be at his best to keep out a fine shot from substitute Lloyd Dyer before Sven-Goran Eriksson's men made the game safe from the penalty spot.
Wellens and Dyer linked up nicely to release Naughton on the right and was hauled down by Commons with Howard making no mistake from 12 yards.
Live text and stats
Saturday, 13 November 2010
Howard (pen) 71
22 Abe yellow card
09 Howard (Waghorn 90)
37 Vassell (Dyer 64)
05 Barker yellow card (Anderson 78)
06 Leacock yellow card
11 Pearson (Kuqi 69)
19 Cywka (Doyle 85)
10 Commons yellow card
Ref: TannerAtt: 25,930
Attempts on target
Attempts off target
90:00+4:13 The final whistle is blown by the referee.
90:00+2:28 Luke Moore is ruled offside. Chris Weale restarts play with the free kick.
90:00+1:52 The referee blows for offside. John Brayford restarts play with the free kick.
90:00+1:22 Paul Gallagher takes a shot. Frank Fielding makes a save.
90:00+0:41 Unfair challenge on Conor Doyle by Greg Cunningham results in a free kick. Kris Commons takes the free kick.
90:00+0:06 The ball is swung over by Kyle Naughton, Lloyd Dyer takes a shot. Dean Moxey gets a block in.
89:02 Substitution Martyn Waghorn is brought on as a substitute for Steve Howard.
88:39 Effort on goal by Paul Gallagher from inside the penalty box misses to the right of the target.
87:42 Paul Gallagher takes a short corner.
87:24 Foul by Paul Green on Richie Wellens, free kick awarded. Yuki Abe takes the direct free kick.
86:04 Corner taken right-footed by Luke Moore.
84:50 Free kick awarded for an unfair challenge on Luke Moore by Curtis Davies. The free kick is swung in right-footed by Dean Moxey.
84:24 Corner taken by Lloyd Dyer from the left by-line.
84:04 Substitution Tomasz Cywka leaves the field to be replaced by Conor Doyle.
81:01 Steve Howard concedes a free kick for a foul on Tomasz Cywka. Russell Anderson restarts play with the free kick.
77:12 Substitution Shaun Barker leaves the field to be replaced by Russell Anderson.
76:43 Booking Shaun Barker is cautioned.
73:28 Handball by Dean Moxey. Free kick crossed by Paul Gallagher.
72:49 Booking Booking for Kris Commons.
70:54 GOAL - Steve Howard:Leicester 2 - 0 Derby Penalty taken right-footed by Steve Howard and scored. Leicester 2-0 Derby.
69:53 Penalty awarded for a foul by Kris Commons on Kyle Naughton.
69:17 James Bailey produces a right-footed shot from just outside the box that misses to the right of the net.
69:01 Tomasz Cywka takes a inswinging corner from the left by-line to the near post.
68:40 Substitution Shefki Kuqi joins the action as a substitute, replacing Stephen Pearson.
68:08 Centre by Kris Commons, Greg Cunningham makes a clearance.
67:38 Corner taken right-footed by Paul Gallagher to the near post, Dean Moxey manages to make a clearance.
67:29 The ball is swung over by Greg Cunningham, clearance made by Dean Leacock.
66:37 The ball is delivered by Paul Gallagher, Lloyd Dyer produces a right-footed shot from deep inside the area which goes wide
of the left-hand post.
66:04 Lloyd Dyer takes a shot. Save by Frank Fielding.
64:05 Unfair challenge on Tomasz Cywka by Richie Wellens results in a free kick. Kris Commons crosses the ball from the free kick
left-footed from right channel, Chris Weale makes a comfortable save.
63:10 Substitution Lloyd Dyer on for Darius Vassell.
62:10 Foul by Paul Gallagher on Paul Green, free kick awarded. The free kick is delivered right-footed by Dean Leacock from right
wing, save by Chris Weale.
61:42 Kyle Naughton sends in a cross, clearance by Tomasz Cywka.
60:43 The ball is swung over by Luke Moore, Close range header by Paul Green goes wide of the left-hand upright.
60:14 Kris Commons delivers the ball, blocked by Curtis Davies.
58:19 Booking Yuki Abe goes into the book for unsporting behaviour.
57:45 Free kick awarded for a foul by Yuki Abe on Paul Green. Free kick taken by Kris Commons.
55:54 Richie Wellens crosses the ball, Shaun Barker manages to make a clearance.
54:15 Free kick awarded for a foul by Richie Wellens on Paul Green. John Brayford takes the direct free kick.
53:45 The assistant referee signals for offside against Luke Moore. Curtis Davies restarts play with the free kick.
52:24 Shot from just outside the box by Steve Howard misses to the right of the target.
52:02 Luke Moore gives away a free kick for an unfair challenge on Curtis Davies. Direct free kick taken by Kyle Naughton.
51:37 Richie Wellens takes a shot. Blocked by James Bailey.
51:11 Steve Howard is caught offside. Frank Fielding takes the free kick.
50:46 Greg Cunningham takes a shot. James Bailey gets a block in.
50:22 Andy King fouled by Dean Leacock, the ref awards a free kick. Richie Wellens crosses the ball in from the free kick, Frank
Fielding makes a save.
50:01 Booking Booking for Dean Leacock.
49:32 Stephen Pearson takes a shot. Save by Chris Weale.
48:14 Shot on goal by Steve Howard from just inside the area clears the crossbar.
46:27 The ball is crossed by Darius Vassell, Steve Howard produces a header from inside the area that goes over the bar.
45:01 The second half has started.
45:00+3:14 The whistle is blown to end the first half.
45:00+2:45 The ball is sent over by Paul Gallagher.
45:00+2:29 Inswinging corner taken right-footed by Paul Gallagher played to the near post, Dean Moxey makes a clearance.
45:00+1:37 Unfair challenge on Greg Cunningham by Tomasz Cywka results in a free kick. Paul Gallagher crosses the ball from the free
kick right-footed from left wing, Paul Green gets a block in.
45:00+0:54 Unfair challenge on Kyle Naughton by Stephen Pearson results in a free kick. Free kick crossed right-footed by Paul Gallagher,
clearance by Luke Moore.
45:00+0:46 Richie Wellens sends in a cross, clearance by Shaun Barker.
45:00+0:26 A cross is delivered by Greg Cunningham, save by Frank Fielding.
45:00+0:20 The ball is delivered by Yuki Abe.
40:28 Steve Howard fouled by Shaun Barker, the ref awards a free kick. Direct free kick taken by Richie Wellens, The ball is sent
over by Tomasz Cywka, Foul by Steve Howard on Frank Fielding, free kick awarded. Direct free kick taken by Frank Fielding.
40:02 Effort from deep inside the area by Tomasz Cywka misses to the right of the target.
39:12 Yuki Abe gives away a free kick for an unfair challenge on Kris Commons. Free kick taken by Paul Green.
38:50 Unfair challenge on Paul Green by Steve Howard results in a free kick. Direct free kick taken by Dean Leacock.
38:08 Shot on goal by Luke Moore from inside the box goes harmlessly over the target.
37:04 The official flags Steve Howard offside. Shaun Barker takes the free kick.
36:51 The ball is swung over by Kyle Naughton.
34:23 Kris Commons has an effort at goal from outside the penalty area which goes wide right of the goal.
32:11 Centre by Tomasz Cywka, clearance made by Jack Hobbs.
31:56 The ball is swung over by Stephen Pearson, Curtis Davies makes a clearance.
31:30 The ball is swung over by Kyle Naughton.
30:52 John Brayford is ruled offside. Chris Weale takes the free kick.
30:30 Centre by John Brayford, Yuki Abe makes a clearance.
27:03 Paul Gallagher has an effort at goal from outside the penalty box missing to the wide right of the target.
26:29 Curtis Davies challenges Dean Leacock unfairly and gives away a free kick. Frank Fielding takes the direct free kick.
25:47 Richie Wellens fouled by Stephen Pearson, the ref awards a free kick. Greg Cunningham takes the free kick.
25:11 Kris Commons takes a shot.
24:36 Steve Howard takes a shot. Dean Leacock gets a block in.
24:09 Kris Commons takes a shot.
22:23 Dean Leacock fouled by Steve Howard, the ref awards a free kick. Frank Fielding restarts play with the free kick.
21:55 Free kick awarded for an unfair challenge on Jack Hobbs by Luke Moore. Chris Weale takes the free kick.
20:55 Corner from left by-line taken by Paul Gallagher.
20:02 Greg Cunningham produces a cross.
19:37 The ball is delivered by Paul Gallagher, Dean Leacock makes a clearance.
19:18 John Brayford challenges Richie Wellens unfairly and gives away a free kick. Paul Gallagher restarts play with the free kick.
18:17 Kris Commons takes a shot. Save by Chris Weale.
14:19 Kyle Naughton produces a cross, Headed effort from deep inside the penalty area by Steve Howard goes harmlessly over the crossbar.
12:58 The assist for the goal came from Richie Wellens.
12:58 GOAL - Andy King:Leicester 1 - 0 Derby Andy King gets on the score sheet with a goal from inside the box to the bottom right corner of the goal. Leicester 1-0 Derby.
10:15 Dean Moxey concedes a free kick for a foul on Darius Vassell. The ball is crossed by Richie Wellens, Andy King produces a
header from inside the area that goes over the bar.
9:30 Shot from deep inside the area by Curtis Davies clears the bar.
8:02 Free kick awarded for an unfair challenge on Richie Wellens by Paul Green. Free kick crossed by Greg Cunningham, Shaun Barker
manages to make a clearance.
7:15 Free kick awarded for an unfair challenge on Steve Howard by Dean Leacock. Greg Cunningham restarts play with the free kick.
6:23 The assistant referee flags for offside against Darius Vassell. Free kick taken by Frank Fielding.
5:54 Unfair challenge on Curtis Davies by Luke Moore results in a free kick. Curtis Davies takes the free kick.
5:13 The ball is swung over by Tomasz Cywka.
4:35 Free kick awarded for a foul by Paul Green on Richie Wellens. Richie Wellens restarts play with the free kick.
3:24 Paul Gallagher concedes a free kick for a foul on John Brayford. Frank Fielding restarts play with the free kick.
2:44 Paul Green has an effort at goal from outside the box which goes wide right of the goal.
1:53 John Brayford sends in a cross.
1:24 Dean Moxey delivers the ball, clearance by Curtis Davies.
0:29 The ball is delivered by Paul Gallagher, save made by Frank Fielding.
0:00 The game begins.
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