Cesar Azpilicueta has said Chelsea's struggles are frustrating after the Blues were defeated 2-0 at Everton on Sunday.
The visitors lost after second-half goals from Richarlison and Gylfi Sigurdsson, and Azpilicueta lamented their failure to capitalise on their own chances.
Per the Mirror's David Maddock, he said:
"It is frustrating. It is not the first game where we played very well in the first half and we didn't kill the game and then in the second half are in trouble from the first minute.
"It is difficult to understand how we cannot keep the consistency during the game and in the season as well.