However, Arsenal scored against the run of play when Cathcart side-footed the ball into his own goal while preventing a shot from Lacazette in the 81st minute.
Cech has been our first choice goalkeeper once again this season with the veteran stopper keeping big-money summer signing Bernd Leno on the bench in the Premier League matches so far.
Emery would not shed any light publicly on why there has been a complete breakdown in talks over extending a contract that expires next June, despite the Spaniard's claim that his assessment of the club's longest serving player had not changed since the summer.
After a bruising barrage from Watford's forwards in the first half, Cech went down on the stroke of half time and was swiftly replaced by Leno. "I want him to stay more near the box, for scoring and to be more aggressive and find assists for his teammates". We need more control, we need to continue to improve with the control, with the possession, with the positioning.
"It is clear also that we are improving in getting more competitive in the hard moments". For me, it's a very good experience at the moment.
"We will prepare for each match like this".
Following four league victories from four, Watford have secured only a single point from a possible nine despite continuing to impress.
"I'm very disappointed for my players because I think they deserved more, and they created certain chances to score", Watford manager Javi Gracia said.
"We had more chances more clear chances, more shots, more shots on target, and feel really good but at the end we didn't deserve the result". I spoke about this situation [about him wanting Ramsey to extend] in the pre-season and now it is the same.