Cardiff City's survival hopes were dashed again after a late Chelsea comeback.
The hosts lost 2-1 at Cardiff city Stadium after going ahead in the first half.
Victor Camarasa swept Cardiff ahead with a delicious volley straight after the restart, before Chelsea scored twice in the final six minutes through Cesar Azpilicueta and substitute Ruben Loftus-Cheek.
However Azpilicueta's equaliser was mired in controversy as he looked two yards offside when heading in after Marcos Alonso had flicked on Willian's corner.
Cardiff were also furious that Antonio Rudiger escaped a red card for dragging down Kenneth Zohore moments later with the striker breaking through on goal.
Rudiger was only shown a yellow card by referee Craig Pawson, but there was worse to come for Cardiff when Loftus-Cheek beat Lee Peltier to Willian's deep cross to head home in the first of four minutes of stoppage time.
The result is particularly painful for a Cardiff side who had looked like ending a run of 16 successive Premier League defeats against sides currently in the top six.
Wins for Burnley and Southampton on Saturday had opened the gap on the Bluebirds in the final relegation place to five points and they are fast running out of time to stay in the Premier League.