Chelsea missed their chance to go top of the Premier League as Fabio Carvalho's 93rd minute equaliser salvaged a 2-2 draw for Brentford in Saturday's west London derby.

The world champions paid for Enzo Maresca's experimental team selection as Kevin Schade fired Brentford into a first-half lead.

Substitute Cole Palmer led the Chelsea revival on his return from injury to equalise before Moises Caicedo's thunderous strike looked to have snatched all three points for the Blues.

But Brentford's persistent threat from long throw-ins got its reward at the death when Carvalho was left unmarked to tap in from close range.

Chelsea remain unbeaten this season but sit only fifth, one point behind the leading quartet of Arsenal, Tottenham, Bournemouth and Liverpool.

A draw edges Brentford up to 12th with four points from their first four games. (AFP)