Two excellent second-half goals helped Roberto Mancini’s team to pull clear in second place in the Premier League after Joe Hart had brilliantly saved Frank Lampard’s penalty.Roberto Mancini’s public attack on his players paid immediate dividends as Manchester City brushed Chelsea aside 2-0 at the Etihad Stadium.The champions’ dominant display was rewarded with second-half goals of real quality from Yaya Toure and substitute Carlos Tevez.The Ivorian’s 63rd-minute opener came shortly after Joe Hart had atoned for clumsily conceding a penalty by launching himself to his right to keep out Frank Lampard’s spot kick.The Argentine sealed the win five minutes from time to help City pull clear of Chelsea in second place and reduce Manchester United’s lead at the top back down to 12 points.Such is the dominance of the runaway leaders that the main fight is for the minor places but Mancini’s men demonstrated that they are not a completely diminished force by overwhelming their main rivals for the runners-up spot. City have fallen short in the goalscoring department this season and, after criticising a number of his players in an interview earlier in the week, the Italian’s solution was to spearhead Sergio Aguero with David Silva and a battery of midfielders.Toure, James Milner and Javi Garcia were supplemented by Jack Rodwell, starting his first match since the 3-1 home win over QPR on September 1.Chelsea, starting just 64 hours after their draw in Prague on Thursday night, rung the changes, with Demba Ba returning to the side in place of Fernando Torres.The visitors looked jaded in the first half as City poured forward in droves and at times threatened to tear them apart.The hosts’ main tactical ploy was to target the right side of Chelsea’s defence and free up either Gael Clichy or Silva on the overlap to launch a cross on to the head of one of their powerful, onrushing midfielders. Rodwell, in particular, made a series of excellent runs into the box and his height was a real danger to the opposition. The former Everton man could have had a hat-trick in the opening half but Chelsea held firm through a combination of last-gasp defending, the safe hands of Cech and some mixed finishing.Five minutes into the second half, a Chelsea long ball sent Ba bearing down on the City goal. Despite being covered by Kolo Toure, Hart came rushing out to harass the Senegal striker, who left his foot in and was taken down by the England No.1.The award of a penalty was debatable but it could easily have been avoided by Hart. With the criticism of Mancini no doubt ringing in his ears, the keeper atoned for his error of judgement by flinging himself low to his right to keep out Lampard’s spot kick.Ten minutes later, City’s supporters had even more reason to celebrate. Toure collected the ball from Silva in the box, surged past two defenders and, confronted by the presence of Gary Cahill, opened up his body to guide a wonderfully composed finish past the grasp of Cech. It was a quite stunning goal, combining the power of a bulldozer with the precision of a surgeon.The game opened up as Chelsea searched for an equaliser but Benitez’s team were too sloppy in possession to cause City much angst. The home side were rewarded for their perserverance with a second goal after 85 minutes. Silva was once again the goal-maker, laying on the ball for Tevez to line himself up for a thunderbolt strike past Cech.