Watford scored three very impressive goals to record their sixth win and seal their opponents' seventh defeat of the season.
Roberto Pereyra opened the scoring with a superb solo goal after just ten minutes, before Gerard Deulofeu - making his first home start since his injury last season - doubled the lead nine minutes later. Isaac Success' simple finish after a set-piece situation gave Watford yet another three points.
As it happened
Huddersfield started the better of the two teams, adding some early pressure on the Watford back-line and Ben Foster. In fact, a great save from Foster to deny Aaron Mooy meant that Huddersfield didn't take an early lead, much to the relief of the Hornets.
The home side did, however, as ten minutes in, the in-form Pereyra picked up the ball on the left, dribbled past multiple Terriers' defenders before slotting home past Jonas Lossl. A fine solo goal, but some quite appalling defending from the away side.
It only needed until the 19th minute for Watford to truly assert their lead - a ball into Deulofeu on the right saw him dash into the box, beat two Huddersfield men and finish beautifully in the top left-hand corner.
Watford slowed the pace down massively; a few more chances went by, with the end product not being there on a lot of occasions.
However, it will be Huddersfield that will look frustratingly towards the impact of Ben Foster on the match. An outstanding save once again saw Chris Lowe's shot tipped on to the top of the crossbar. That was as close as Huddersfield got.
Javi Gracia's men had a great chance to go 3-0 up just five minutes into the second half, with Deulofeu nearly getting a second - he sidestepped Lossl, but it was not enough, and could only send his resulting shot just wide of the right side of the goal.
Watford had more chances, but by this time they had clearly slowed the pace down. Pereyra's backheel to Will Hughes should have gone in, but the Englishman could only fire his shot straight at Lossl from close range.
Huddersfield had one more chance to get back in it - Foster again with a save down to his left to deny Isaac Mbenza.
In the end, it was the other Isaac on the field that did score. A free-kick on 80 minutes from Etienne Capoue found Kiko Femenia on the right side of the penalty area, who hit it across goal for Success to score his first Premier League goal for two years.
Takeaways from the match
Pereyra, Deulofeu and Success look great
The Watford front three were all in fine form today. Pereyra looked great on the left as he has done for such large parts of the season - and firing in his fifth of the season shows that. Deulofeu has shown his influence when starting - a 2-0 away win at Molineux last week followed by a 3-0 home win on Saturday shows his capabilities. Success has had a remarkable turnaround and a fantastic start to the season; from fourth choice striker to number one is excellent from the Nigerian.
Huddersfield must shake things up
It's all well and good praising Watford for their efforts on the afternoon, but Huddersfield's defence was woeful for much of the game. The first goal from Pereyra demonstrates this clearly; he didn't even take a touch inside the penalty area until he tapped in the goal, and three defenders couldn't tackle him.
They also are clearly having major problems with their finishing. Four goals from ten matches is dreadful anyway, but the amount of chances they had without Foster's excellent goalkeeping raises concerns about that side of their game as well.
Watford's defence improving game by game
It is clear that Ben Foster was one of the best players on the pitch on Saturday afternoon, but the Hornets' defence are also improving with every game. Adrian Mariappa reasserted his position in the starting XI, and as captain, following Christian Kabasele's return from suspension, whilst Adam Masina also kept Jose Holebas out of the team. All of them have been working well together, with the two wing-backs (Masina and Femenia) also playing well when going forward. Two very solid performances back-to-back from the Watford back-line.
Stand-out players
Ben Foster
Foster had a remarkable game for Watford - denying Huddersfield going ahead on multiple occasions, and preventing them from getting a goal back on many times too. A very good performance from the number 26.
Gerard Deulofeu
Deulofeu managed to impress many times when playing for Watford last season whilst on loan from Barcelona; and is seeming like a steal for just £11.5 Million. He was influential in creating Watford chances - and went and scored a nice goal as well. He could be vital for the Hornets this season.
Roberto Pereyra
Certainly one of Watford's best players this season, if not the best. He is one of the most creative players inside the team, and whenever he gets on the ball, something good is usually likely to happen. The Argentinian is on fine form this season.
Huddersfield woes continue
The Terriers are staring right down at the Championship even at this early stage in the season. Winless in 10, scored four and conceded 21 is simply not good enough. They lacked any depth against Watford on Saturday, and their lack of signings during the summer transfer window is costing them vital points. None of their defenders were able to do much good today, and the same can be said about their attackers. They didn't provide a threat, yet couldn't produce a threat.
Something must change soon from David Wagner, or this could be a very long season for the club. Clubs jump out of the relegation zone after a terrible start, and Huddersfield will eventually have a good spell, but they look extremely poor.
Watford provide yet another good performance
Other than a dismal 4-0 loss to Bournemouth three weeks ago, every Watford performance has been strong. The 2-1 defeat to Manchester United and 2-0 defeat at Arsenal could easily have been zero points converted into three - or at the very least one.
After that Bournemouth match, many Watford fans were fearing the worst - it was four without a win, and being turned over by Bournemouth at your own ground was not something to be proud of.
But they bounced back immediately with a quality 2-0 win at Wolves, inflicting only Nuno Espirito Santo's third home defeat since taking over the club. This was followed by Saturday's 3-0 victory over the Terriers, and Javi Gracia's men are within just two points off third.
It is also their best ever start to a top-flight season. Watford's performances continue to improve, which begs the question; is a Europa League spot a real possibility for the club? You never know.