Chelsea moved within a point of the Premier League's top four as they beat Cardiff City 2-1 in Wales on Sunday thanks to Ruben Loftus-Cheek's stoppage-time winner.
After losing four of their last five away league games, the Blues earned a crucial victory at the Cardiff City Stadium, but it was a hugely laboured performance.
After a meek first-half showing from the visitors, Cardiff took the lead through Victor Camarasa early in the second half.
The hosts looked set for a valuable victory, but Cesar Azpilicueta equalised in controversial fashion six minutes from time.