And with Liverpool facing the Gunners on Saturday evening, this could present a chance for Chelsea to overtake the Reds if things go their way.
Latest info reaching footballlive.ng out of Queensland indicates further that Sarri has already held clear-the-air talks with Moses and told the star he is not in plans for the team, hence his absence on Wednesday.
Can Chelsea continue their fine start?
It is also the first time in 30 years that three teams in England's top division have remained unbeaten after 11 rounds of fixtures.
The Blues now refocus their attention on the Premier League, and with last weekend's demolition job at Burnley still fresh in the memory, they'll be confident of adding three more points to their tally against a struggling Crystal Palace side.
FW Eden Hazard, 7 - Brought on to turn the match Chelsea's way and made an immediate impact, his free-kick running all the way through to Morata to score his second.
Palace should welcome Wilfried Zaha back in to the side after he recovered from a minor shoulder problem that kept him out of the League Cup defeat to Middlesbrough.More news: Daniel Ricciardo snags pole from teammate Max Verstappen at Mexican Grand Prix
This smart video from Chelsea seems to neatly sum up the rich vein of form the Blues are in at the minute.
The set-back paved the way for a double change as talisman Eden Hazard and Matteo Kovacic came on to change the dynamics of the game.
Marcos Alonso's low cross from the left was met by his compatriot Pedro, who applied a confident first-time finish past a helpless Hennessey as Chelsea finally got their two-goal cushion.
Alvaro Morata does not exactly radiate confidence as a centre-forward (as his manager admitted even after this game) Quite the opposite, in fact: More often than not, he can look uncertain, nervous and lacking the sort of ego that powers someone like Diego Costa, his predecessor at Stamford Bridge. Had he been partnered by a proper striker, then who knows what might have possible in this game and where they might sit in the table, instead of 14th with only eight goals to their name.
"Hazard is Hazard, he is able to do it very often".
Key Stat: Chelsea have scored more goals in the final 15 minutes of Premier League games this season than any other side (10).