Watford pulled level on halftime of their clash with Chelsea at Stamford Bridge today.
Dominant for the half, Chelsea's defence again leaked as Abdoulaye Doucouré struck in injury-time.
Pedro had given Chelsea the lead on 11 minutes with a superb long range drive.
Going into the break, Blues hero Pat Nevin had concerns about attacking pair Alvaro Morata and Eden Hazard.
He stated: "Chelsea are missing a couple of things. Eden Hazard is nowhere near the form he was in last season.
"In little short bursts, he looks special but he didn't really have a pre-season and is coming back from that injury.
"Alvaro Morata is not looking to go long at the moment either. That stretches the play and helps Chelsea.
"He's not done that. It might be because he has had a hamstring injury."
However, former Blues defender Jason Cundy insisted at halftime there was plenty to be encouraged about.
"The combination of Hazard, Morata and Pedro was excellent. That triangle was doing so much. And (Cesc) Fabregas also.
"The four of them were creating so much, they must continue it in the second-half."