Pedro points the way after blasting home the Chelsea opener in their FA Cup third round clash against PeterboroughThe Spaniard pounced on a loose ball in the Posh penalty area and rifled home a fierce volley into the top cornerMichy Batshuayi marked his first start since October's EFL Cup defeat at West Ham by scoring his fourth Chelsea goalWillian got the Blues third less than 10-minutes into the second half and dedicated the strike to his recently departed fatherTom Nichols got his moment to remember when he briefly gave Peterborough some hope at 3-1 after John Terry's red cardA second tidy finish from Pedro dashed any hope of a comeback from the League One outfit when he made it 4-1Antonio Conte took the opportunity to give his lesser-sighted squad members such as Ruben Loftus-Cheek a run outKurt Zouma made his return to the Chelsea line-up for the first time in 336 days after making his return from injuryJohn Terry took the captain's armband as he stepped into Conte's back three for the visit of League One PeterboroughIt was a feisty opening period where both sides showed the attacking intentions, here Asmir Begovic denies Lee AngolTerry came close to marking his return to the first team with a goal but could only fire straight at Posh stopper Luke McGheeWith plenty of rumours surrounding Michy Batshuayi's Chelsea future he was another to get a first team opportunityChelsea were eventually able to make their chances count when Pedro broke the deadlock just before the 20-minute markSpaniards embrace as Cesc Fabregas congratulates former Barcelona team-mate Pedro on scoring the game's first goalThere was a scare for Chelsea when recently-returned defender Zouma went down injured but he was able to continueFabregas wasn't holding back and was booked for a late challenge on Chris Forrester midway through the opening periodDespite starting his first game since September Terry seemed able to keep up with the pace of the game against the PoshNathanial Chalobah has been a regular from the bench this season looked to make the most of a rare start in the cupBatshuayi showed Conte what he could do when he got his fourth goal for the club, firing home just before the breakZouma was clearly delighted with his team-mate's goal and the pair celebrated with a special 'secret handshake'As the game wore on chances were few and far between for the Posh, here Lee Angol looks to try and turn the tideWillian sealed the game when he curled a effort home past McGhee into the bottom corner to make it 3-0