Chelsea midfielder Mason Mount hailed the influence of Kurt Zouma on victory at Burnley.
Mount's pinpoint corner was crashed into the net by Zouma with the game in the balance.
It was the Frenchman's third Premier League goal of the campaign - already his best return in the competition - and Mount believes it is proof of their increased threat from dead balls.
Mount said, "The gaffer said at half-time at 1-0 it's never done. They put some pressure on us early in the second half. We knew it was going to come, we had to weather it and then getting that second goal from big Zou winning headers.
"We need that set-piece threat, we didn't really have it last season, and we have scored quite a few already this season. It's something we can continue to improve on."
