Harry Redknapp felt Chelsea's controversial equaliser changed the game at Stamford Bridge on Saturday.
We looked in good shape with seconds remaining of the first half of a key Premier League encounter.
We'd enjoyed spells of possession, looked dangerous on the counter-attack and, crucially, led 1-0 thanks to Sandro's beauty into the top corner from 30 yards.
But it all changed in the 45th minute.
Frank Lampard took aim from 25 yards, the ball squirmed through Heurelho Gomes' grip but the goalkeeper looked to have clawed it back before the whole ball crossed the line.
Unfortunately for us, referee Andre Marriner and his assistant Mike Cairns decided the ball had crossed the line and awarded the goal.
The Blues got on top in the second half and eventually found a winner two minutes from time when Solomon Kalou - looking offside - tapped home after Didier Drogba scuffed his shot.
"I thought we played ever so well in the first half, kept the ball, scored a fantastic goal and looked in good shape at 1-0 up," said Harry.
"That goal changed the whole game. They were frustrated, the crowd was frustrated and we would have come in 1-0 up and it would have been an uphill struggle for them.
"We could have changed the way we played in the second half, but suddenly they were back in the game."
The first goal was the topic of most of the post-match questioning.
Harry described it as 'an honest mistake' by the officials.
"The goals are disappointing," he added. "The first goal didn't cross the line and the second goal was offside. The linesman has made mistakes but they are honest mistakes. It's so difficult for them.
"We didn't get the rub of the green. They made what they thought were the right decisions but unfortunately they got them wrong. That's how it goes.
"I just find it unbelievable in this day and age that we haven't got technology."