Chelsea routed Aston Villa 4-0 at Villa Park, sending the home side even closer to the predicted relegation from the Premier League.
A brace of goals from Perdo and debut strikes from Ruben Loftus-Cheek and from Pato saw off the side rooted firmly justifiably at the bottom of the league.
The sight of Pato coming on for injured Loic Remy brought the biggest cheer from the Chelsea faithful who doubted the on-loan striker would ever make his debut.
He slotted home coolly from the penalty spot to make his mark.
Ruben Loftus-Cheek sent the Londoners on their way with a smartly taken strike, his first league goal for the Blues and Pedro's double, one a poacher's strike from an acute angle, the second a sniffer goal after excellent set-up play by Oscar sealed an emphatic victory.
A muted Villa Park greeted both sets of fans as Chelsea gave a debut to American Matt Miazga.
The 20-year-old, 6ft 4 in had a very uncomfortable start, twice beaten in the air by Rudy Gestede.
But it was the Londoners who had the first effort on goal Pedro, clipping the top area of the side netting with a right-footed curler from just outside the Villa penalty area.
Gestede forced Courtois into a spiller of a save on 15 minutes, but he managed to snaffle up the rebound.
Pedro did show some wonderful skill to bring down a long ball and hook it over Brad Guzan into the net, but the Spain wide man was yards offside.
Alexandre Pato entered the fray, replacing injured Loic Remy on 22 minutes.
The on-loan Brazil striker, finally making his debut for the Blue.
The Chelsea fans acknowledged the even, with renditions of "we forgot that you were here" emphasising the fact that Pato, a January signing, had yet to feature after 64 days at Stamford Bridge..
That substitution seems to galvanised the Blues who took the lead on 26 minutes through the low drive of Ruben Loftus-Cheek, from eight yards out, who latched onto a cross from Cesar Azpilicueta.
It was the youngster's. first league goal for the Blues.
The Blues doubled their lead on the stroke of half-time through the penalty spot.
Fabregas sent in a regulation ball into the Villa penalty area, Aly Cissokho just fell over Pato, sending the striker to the ground.
A clear penalty. Up stepped the striker, he dusted himself down and coolly rammed the ball home, past Brad Guzan.
Chelsea replaced ineffectual Kenedy with Oscar at half-time and he made an immediate impact, 54 seconds to be accurate to set up a wonderful one-two with Pedro who slotted home to notch up number three for the visitors from just inside the Villa penalty area.
Number four came on 59 minutes when Guzan spilled a weak Pato shot and sniffer Pedro was on hand to slide the ball in from a tight angle.
This one-sided game got even worse for relegation-haunted Villa when right-back Alan Hutton picked up two silly yellow cards and was promptly sent to the stands with five minutes left on the clock.
Boos rang round Villa Park At the end of the game.
Bye, bye Villa Park
Chelsea: Thibaut Courtois, Branislav Ivanovic, Cesc Fabregas, Baba Rahman, John Obi Mikel, Kenedy, Loic Remy, Matt Miazga, Cesar Azpilicueta, Ruben Loftus-Cheek
Subs: Asmir Begovic, Oscar, Falcao, Alexandre Pato, Bertrand Traore, Nemanja Matic, Jake Salter-Clarke
Aston Villa, Guzan, Richards, Gana, Westwood, Lescott, Ayew, Hutton, Sanchez, Gill, Gestede, Cissokho
Subs, Bunn, Okore, Bacuna, Sinclair, Veretout, Lyden, Grealish