Queen's Park Rangers, the worst team in the Premier League, upset Chelsea 1-0 on Wednesday before shocked Blues supporters at Stamford Bridge.
Facing QPR, which came into the match with only one win in 20 outings this season, Chelsea coach Rafa Benitez decided to rest Juan Mata and Eden Hazard.
It took the Blues until the 43rd minute to mount an offensive threat and QPR goalkeeper Julio Cesar had no difficulty in turning aside Oscar's shot.
Cesar had to come up big early in the second half, stopping a shot at point-blank range by Fernando Torres, but QPR then seized the initiative, prompting Benitez to summon Hazard from the bench.
The Belgian, however, was unable to generate much in the way of offense, while former Chelsea player Shaun Wright-Phillips scored for the visitors in the 78th minute and QPR made the 1-0 lead hold up.
The result left Chelsea in fourth place, one point behind Tottenham Hotspur and a whopping 14 points from league-leading Manchester United.
The fans at Anfield had a lot more to cheer about on Wednesday, as Uruguayan international Luis Suarez led Liverpool to a 3-0 win over Sunderland.
Suarez set up the Reds' first goal with a deep ball that Raheem Stirling lifted over the Sunderland keeper in the 19th minute.
The Uruguayan scored seven minutes later to make it 2-0 and sealed the triumph with another tally at the 53rd minute mark, bringing Suarez's total for the season so far to 15 goals.
Wednesday's other Premier League match was in Newcastle, where visiting Everton overcame an early 1-0 deficit to win 2-1 and climb into fifth place. EFE