Carlo Ancelotti insists Chelsea will use Sunday's crucial London derby at Tottenham to show they can emerge unscathed from the woeful run that threatens to ruin their defence of the Premier League title.

Ancelotti has presided over the worst run of results since Blues owner Roman Abramovich bought the club in 2003 and Chelsea are in danger of being cast adrift in the title race unless they can end that dismal sequence of four defeats in eight matches.