Jose Mourinho says Crystal Palace 'were lucky' and bemoans 'clear penalty' after rare Chelsea defeat at Stamford Bridge

Despite his frustration, the Chelsea manager congratulated Palace on their first win at Stamford Bridge for 33 years

Jose Mourinho pictured during his side's defeat to Crystal Palace (GETTY IMAGES)

Jose Mourinho bemoaned a "clear penalty" decision that wasn't given following Chelsea's shock 2-1 defeat to Crystal Palace.

The Chelsea manager also admitted his side had made a "very bad start" to the season that has yielded just four points from four games.

Joel Ward scored the winning goal at Stamford Bridge after Radamel Falcao had cancelled out Bacary Sako's opener. It was an incredible result for Palace, their first win on Chelsea soil for 33 years and just Mourinho's second home defeat in the Premier League.

Mourinho paid tribute to Alan Pardew's side after the match before turning his focus on what he thought went against his side.

"The first thought is to Palace," Mourinho said.

"They come with everything. They were lucky but they deserve the luck.

"My team, I think we deserved more. I don't want to say we deserved to win, because it's not true.

"The referee did a big mistake. Clear penalty with the result 0-0 and obviously with influence in the result.

"The one with Zouma that I watch at half-time on television. It was a clear penalty.

"(But) I prefer to go in this order, when I say Crystal Palace first."

Chelsea are now eight points adrift of Manchester City after four games of the campaign but Mourinho, who was taking charge of his 100th home game in the league, doesn't think his side are out of the running.

"We have eight points less than the leader and seven and six and five from others. In another league I would say game over.

"In the Premier League I don't say game over because last season we had seven points to the second and in one month we lost the seven points. On January 1 we were on the same points as the second.

"This is the Premier League and I think it's getting more difficult than before.

"The reality is that we had a bad start. Four points in four matches is a very bad start."

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The Blues were unable to add to Mourinho's record of 76 wins in the previous 99 home games as the impressive Palace emulated Sunderland's April 2014 success.

"I'm not happy," Mourinho said.

"I cannot say that I had 11 players performing at the same time.

"Two or three of them their individual performance was far from good.

"I blame myself for not changing one of them. I kept him in the game for 90 minutes.

"When I made the third change I realise I needed a fourth and I don't have a fourth."

Mourinho declined to reveal the name of the fourth player.

Branislav Ivanovic's performances have been placed under scrutiny, but Mourinho would not comment on the right-back's display.

"I'm not going to analyse individual form, individual performances," he added.

"If a player is not performing there are two ways of looking at it. One way is that I trust so much the player that I'm going to wait for the improvement.

"Or even trusting the players arrives a moment where you think I have to change. I can go both ways."

Their next match is at Everton on September 12 and it remains to be seen which Blue shirt John Stones will be in or whether Chelsea will be reinforced by further arrivals by Tuesday's 6pm deadline.

"We have to do better. Me and the players, we have to do better," Mourinho added.