It was a special night for Antonio Conte who was taking charge of his 100th game as Chelsea boss.
Burnley's opening day 3-2 win at Stamford Bridge was an early indicator as to how the season would develop for both sides with Sean Dyche's side now dreaming of qualifying for European competition for the first time since 1967.
Nobody on the pitch looked more surprised than the Spain striker as the ball cannoned back off an advertising board rather than nestling in Burnley's net.
Burnley came back fighting in the second-half and reaped their rewards in the 64th minute as Gudmundsson's long-range effort inadvertently caught Ashley Barnes' leg to go into the back of the net.
"There's been a bit of a noise around their camp but they're still a top-class side, you saw the changes they made and I'm sure you can do the maths for the numbers they were brought in for".
"We are not them, we are not close to them yet, but we have moved forward".
Moses was a threat down the right all game and the wing-back thumped in a low drive that beat birthday boy Nick Pope at his near post to claim all three points for the visitors.
Speaking to Sky Sports immediately after the game, goalscorer Moses said: 'I thought we deserved the three points today from start to finish.
Cork has been a rock in the Burnley midfield, playing every minute of every Premier League match after rejoining the club he first spent time at on loan from Chelsea eight years ago last summer.
"If we want to be realistic with five games to go, it's not simple to reduce the gap, but we must have the will to fight, the desire to take this target".