The post mortem of Sunday's defeat at home to Arsenal is well underway. Salomon Kalou has given his thoughts to chelseafc.com.

The 23-year-old started on the right wing in the absence of Joe Cole and could have doubled our narrow lead in the first half, but for an offside flag raised against him.

It was a decision that he accepted at the time, but having had a second look, believes it wrongly cost us.

'I don't think I was offside, there was one ball and I was in and was onside, it should have been a goal normally. I ran that way across the line and curved my run. It's strange how a football game can go like that, from one way to another,' he said.

In the second half, things got worse as Arsenal equalised and then took the lead, benefiting from another offside call.

'Then they get the goal that was offside, I have seen it on TV, and it was big time offside,' Kalou said. 'I think we had a very good first half and Arsenal came back into the game after the goal.

'I think we didn't get the second goal and kill the game which didn't help, because they would have been done for, but they scored and got back into the game. For the second goal they won the header and when you don't win this first ball you have to win the second. We didn't win that and in front of goal it is too dangerous with Van Persie and Adebayor.

'I don't think it was a bad game from Chelsea. I think they managed to come back in the game and score two goals.'

We now have a midweek with no game, which allows Luiz Felipe Scolari to properly prepare his side for a visit to Bolton at the weekend, looking for an 11th straight away league win.

Kalou insists it is at Stamford Bridge where we must begin to show our best football again.

'We have to show how strong we can be even with losing games at home and dropping points,' he reasoned. 'We are still in front and we have a good balance in the team. Now we have to take more points at home if we want to be champions.'

There will be more exclusive reaction to Sunday's game on Chelsea Plus and in Chelsea TV's Monday Night Live from 6.30pm.