The travelling fans at Vicarage Road for Watford v Newcastle were looking for a bounce back from the two poor defeats to Everton and West Brom.
However, the first 45 minutes have been arguably the worst they have seen so far this season.
Poor defending from Paul Dummett saw Newcastle go a goal down in under 120 seconds, Pereyra the beneficiary.
One-time supposed NUFC target Andre Gray then made it two on 28 minutes, for once Martin Dubravka letting himself down in commanding the box. Totally getting a cross wrong and leaving the Watford man with a simple header.
Six minutes before half-time, it was Paul Dummett once again at fault, bringing down Gray in the box for a spot-kick.
Dubravka redeemed himself slightly with a double save, Deeney failing also with a rebound after his first effort was saved.
At the break it reads seven shots on target for Watford and none for Newcastle.
Hoping for better, or at least not as bad, in the second half.
Kevin Kilbane covering the match for BBC Sport:
“It was dreadful defending by Newcastle but it’s a good finish by Roberto Pereyra.
“Paul Dummett should have put his foot through it but it’s great awareness to feed Pereyra who finished well.”
Alistair Bruce-Ball for BBC Radio 5 live:
“Newcastle’s start to this game has been sleepy, sloppy, shoddy and I’m sure there’s a few other “s” words Rafael Benitez might come up with.
“Having already furiously stripped down to his waistcoat (not just his waistcoat obviously!) on the touchline.
“Martin Dubravka has made a superb double save to deny Roberto Pereyra and Troy Deeney – and Newcastle just look like they’re very much here for the taking.”
Stats from BBC Sport:
Watford 2 Newcastle 0
Watford: Pereyra 2, Gray 28
Possession was Watford 48% Newcastle 52%
Total shots were Watford 8 Newcastle 2
Shots on target were Watford 7 Newcastle 0
Corners were Watford 1 Newcastle 1
Referee: Roger East
Dubravka, Manquillo, Lascelles, Lejeune, Dummett, Murphy, Shelvey, Diame, Kenedy, Perez, Gayle
Darlow, Yedlin, Hayden, Joselu, Haidara, Merino, Ritchie