After the game, Redknapp told BBC Sport: "I thought it was a harsh penalty that won it for Chelsea. It was a shoulder to shoulder charge and our guy was a bit stronger than the Chelsea guy, who went over.
"We played well against Liverpool and we've played well against Chelsea. But to get no points from the two games is obviously disappointing.
"However, there's lots of positives. We showed a great attitude and I think we have got enough to stay in this division."
Next up for QPR is a clash against champions Manchester City.