Chelsea enjoyed a huge let-off as Fernando Torres' highly-controversial goal helped them to a 4-2 victory that sent them top of the Barclays Premier League and denied Reading a famous result at Stamford Bridge.
Torres appeared a yard in front of play when he completed his side's comeback from 2-1 down in an early-season thriller but his finish was allowed to stand by referee Lee Mason and his assistants.
It was harsh on Reading, who brilliantly battled back from Frank Lampard's penalty to lead at half-time through Pavel Pogrebnyak and Danny Guthrie.
Guthrie's goal came courtesy of a Petr Cech howler and opposite number Adam Federici had a nightmare of his own - his second in five days - in conceding Gary Cahill's equaliser.
Branislav Ivanovic scored into an empty net in the final minute of stoppage-time after Federici bombed forward for a corner as the Royals went in search of a draw.