Diego Costa was centre stage and scored twice but could not prevent Chelsea losing their 100 per cent Premier League record in a controversial 2-2 draw at Swansea on Sunday.
The result left Manchester City two points clear of them at the top of the table.
The fiery Spain striker scored in the 17th minute as Antonio Conte's team took control of the game before conceding twice in quick succession.
In the 59th minute goalkeeper Thibaut Courtois gave away a penalty by fouling Gylfi Sigurdsson, who converted it to equalise.
Then Gary Cahill was dispossessed by Leroy Fer and apparently fouled, but Fer was allowed to go on and score.
Nine minutes from the end Costa, who also received his third yellow card in four games, equalised with an overhead scissors kick that might have been penalised for dangerous play.