Chelsea extended their unbeaten run and climbed into second with a 3-1 win over Crystal Palace on Sunday evening.Alvaro Morata, who is currently in a rich vein of form, bagged a brace at Stamford Bridge in another triumphant day for Maurizio Sarri.The Spanish striker put the hosts in front before Andros Townsend levelled the scores early in the second half.However, Morata fired in a crucial goal in the 65th minute and Pedro added another five minutes later.Kepa Arrizabalaga has managed to stay out of the headlines since his £71.6m transfer from Athletic Bilbao this summer. But he's quietly impressed fans at Stamford Bridge with his remarkable ability with his feet.The 24-year-old Spaniard replaced Thibaut Courtois between the sticks three months ago - and produced another impressive performance against Crystal Palace.

Sweeper Kepa

Chelsea fans on social media were hailing Kepa after he was forced to vacate his penalty box and deal with danger in the 27th minute.

He sprinted out to arrive at the ball first and, under pressure, managed to sweep out a wonderful pass to Cesar Azpilicueta on the wing.

So cool under pressure.

Chelsea have played some beautiful football this season and Kepa certainly deserves recognition for his high-quality distribution.

It's no coincidence that the three best Premier League teams this season have the three best ball-playing goalkeepers; Ederson, Alisson and Kepa.

“It’s normal that when someone pay that amount of money they talk about your transfer," said Kepa in October.

"You have to show your value but I am not focused on my price, I am just trying to do my job.

"I am really grateful for his confidence to sign me. Obviously he was key for me joining the club.

"I feel really comfortable on the way he likes to play, I am so happy and grateful.”

Kepa has slotted in seamlessly at Stamford Bridge and looks certain to be Chelsea's number one for years to come.