Chelsea manager Frank Lampard says his players have to make themselves heard and take more responsibility on the pitch as they chase a top-four finish to secure a Champions League spot.

REUTERS: Chelsea manager Frank Lampard says his players have to make themselves heard and take more responsibility on the pitch as they chase a top-four finish to secure a Champions League spot.

Chelsea, who are third in the Premier League, lost 3-0 at Sheffield United on Saturday and Lampard said all he could hear were the opposition's voices in the empty stadium.