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Sebastien Haller (left) joined West Ham United from Eintracht Frankfurt for a club record £45m

West Ham United boss Manuel Pellegrini says striker Sebastien Haller is a "complete player" after he scored a third goal in two games during their win against Norwich City.

The Frenchman had scored twice against Watford leading into the game against the Canaries and struck midway through the first half on Saturday.

Haller gave the Hammers the lead with an easy finish from close range after a low cross from the left wing by Arthur Masuaku before Andriy Yarmolenko wrapped up the win in the second half.

"He scores goals but works a lot for the team as well. He will continue improving in every game." Pellegrini said following the match.

"Sebastien is a complete player."

West Ham's victory lifted them to fifth while Norwich suffered a third defeat in four league games and have now conceded more goals (10) than anyone else in the Premier League this season.

Despite going in 1-0 down at the break, Norwich fared well against an organised West Ham side, with Todd Cantwell coming closest to inspiring a quick equaliser.

After Max Aarons put a fine run into the box, beating several West Ham markers in the process, he delivered a chipped ball to Cantwell who headed over the bar from close range.

The visitors' task was made harder on 36 minutes when captain Christoph Zimmermann was forced off through injury following a robust tackle from Haller.

Ibrahim Amadou replaced him, having only made his debut in their midweek Carabao Cup defeat by Crawley Town, and the inexperience showed as the hosts dominated the second half.

Yarmolenko went on to double West Ham's advantage as he found the net with a left-footed volley after Norwich failed to clear.

Despite the visitors' best efforts, the Hammers did well to cancel out Norwich's prolific goalscorer Teemu Pukki to complete what was ultimately a routine win against the newly promoted side.

The Hammers' fine turnaround

Pellegrini very happy with 'massive' Hammers performance

West Ham's win marks a change in fortunes from last season for Manuel Pellegrini's side, who might have anticipated another tough start to a campaign after their heavy defeat by Manchester City on the opening day.

At this point last season, the Hammers were bottom of the Premier League without a point and had conceded 10 goals in four league games.

But since that opening 5-0 loss to the champions, Pellegrini has guided his side to a draw at Brighton, a win against Watford and a midweek Carabao Cup victory over Newport County, before seeing off the Canaries in some comfort.

Norwich did well to dictate the flow of the game in the early stages of both halves, but Haller's 24th-minute goal shifted the game in favour of the hosts.

The Frenchman, who signed from Eintracht Frankfurt for a club record £45m in the summer, got on the scoresheet again after his double against Watford as he linked up with Masuaku to poke home.

The Hammers fielded pressure from Norwich afterwards, but they rarely looked in danger even before Yarmolenko's impressive second-half volley doubled their lead.

This was a performance to inspire confidence in front of West Ham's vociferous home support and their side now look in better shape than they did this time just 12 months ago.

Norwich's tough start continues

VAR didn't work during Hammers defeat - Farke

Norwich have had a week to forget. After home defeat by Chelsea last Saturday and an EFL Cup exit at Crawley in midweek, they struggled to find an answer to the hosts' fine defensive performance.

That loss to Chelsea followed a comfortable 3-1 win over Newcastle, but the promise shown in that game appears to be quickly wearing thin.

Pukki, who came into the game with five goals in three games, had an uncharacteristically quiet match and Norwich were short of answers once the hosts took the lead.

And the loss of Zimmermann left a hole in defence that the Hammers easily exploited through the match.

In the end, the loss could have been heavier, goalkeeper Tim Krul saving Manuel Lanzini's close-range header before making a fine save from Anderson soon after.

Man of the match - Andriy Yarmolenko

Andriy Yarmolenko marked his return to fitness with an assured performance and fine finish for his goal after a serious Achilles injury kept the West Ham winger out for eight months

'I'm a friend of VAR but on this day it didn't work'- what they said

West Ham goalscorer Sebastien Haller: "I'm a striker and it's really important to get confidence and score goals. The Premier League is not easy, it is quite tough and intense. I try and adapt and do everything to get good information. It is really good for our confidence going into the international break with a win."

Norwich City head coach Daniel Farke told Match of the Day: "At this level small details cost. This is a game where VAR didn't work. There was a nasty tackle against my centre-back [Christoph Zimmermann] and it wasn't even given as a free-kick. Then a few minutes later my centre-back wasn't able to spring back and block the cross [for West Ham's first goal]. My centre-back is now in hospital. My feeling was this made the difference.

"I'm not claiming for red cards, it is up to the VAR to judge it. The only thing I say is that my centre-back is in hospital and the other player is on the shoulders of the West Ham goalscorer. I'm a friend of VAR but on this day it didn't work."

West Ham keep up fine form - the stats

West Ham remain unbeaten in their past nine home games against Norwich in all competitions (W5 D4), scoring 19 goals and conceding nine in this run.

Norwich have lost three consecutive matches in all competitions for only the second time under Daniel Farke, and the first since they lost four in succession in November 2017.

West Ham have won seven points from their opening four league games this season (W2 D1 L1); it took them seven games to reach this tally in 2018-19 (W2 D1 L4), having lost each of their first four such games last term.

West Ham have won six of their past eight games across all competitions (D1 L1), as many as their previous 20 matches combined beforehand (W6 D4 L10).

Sébastien Haller is only the fourth player to score as many as three goals in his first three Premier League appearances for West Ham, after Trevor Sinclair, Ian Wright and Demba Ba.

Andriy Yarmolenko scored his third Premier League goal for West Ham, 349 days after he scored his first two for the club against Everton in September 2018.

Each of Arthur Masuaku's six Premier League assists for West Ham has been for different players (Antonio, Kouyaté, Sakho, Arnautovic, Pérez, Haller).

What's next?

West Ham travel to the West Midlands following the international break as they take on Aston Villa on Monday, 16 September (20:00 BST).

Norwich face reigning champions Manchester City at Carrow Road two days earlier on Saturday, 14 September (17:30 BST).