Chelsea are "maybe the best team in the Premier League right now", says Brentford manager Thomas Frank.
Enzo Maresca, who replaced Mauricio Pochettino in June, has led the Blues to six straight wins in all competitions before hosting Frank's Brentford at Stamford Bridge on Sunday.
Four successive league wins have taken Chelsea second in the table, four points behind leaders Liverpool.
"They are maybe even more in-form than Liverpool, even though they are top of the league," said Frank.
"They are playing incredible football and are well-coached. Maresca has done a top job so far with his coaching staff and they look extremely dangerous.