Manchester City's goalscoring machine Erling Haaland netted a second-half hat trick in a 5-1 thrashing of Fulham on Saturday as the Premier League pacesetters maintained their 100% record.

Julián Álvarez and Nathan Aké opened the scoring for the champions, who have beaten Fulham in their last 15 league meetings, and top the table with 12 points from four games.

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But clinical Haaland stole the show yet again with another predatory performance at the Etihad Stadium.

"I'm back. No problem for me. I'm always hungry. It's a new season and I'm ready for it," Haaland said of his hat trick.

"It started a bit sloppy but we ended in a good way. Important win. We go into the international break having won four in four. Good start to the season."

Fulham, who had scored an equaliser through Tim Ream before being overrun, have four points from their four games.

Haaland, who broke several scoring records last term, added another bybecoming the fastest to reach 50 goal involvements in the Premier League with his first of the afternoon.He now has 43 goals and nine assists in 39 Premier League appearances.

The Norway international has netted six goals this season and five Premier League hat-tricks since joining City last summer.

The most controversial moment of the game was Ake's goal seconds before halftime, which appeared set to be ruled out as Manuel Akanji was standing in an offside position in front of Fulham goalkeeper Bernd Leno and jumped over the ball on its way into the net. But VAR ruled that the goal was valid.

Fulham manager Marco Silva vented his frustration over the decision to referee Michael Oliver.

Alvarez had broken open what had been a pedestrian affair in the 31st minute when Haaland fired a pass square across the edge of the six-yard box that the Argentine tapped in. However, Fulham were back on level terms two minutes later through Ream.

"Every year is like this at this club. We start a bit late and a bit sloppy because we play right until the last game [of every season] because we are the best club," Haaland said. "It is how it is. We will only get better and better from here."

Ake then put City 2-1 ahead and in the second half Alvarez repaid Haaland when his flicked pass found the striker behind Fulham's defence just before the hour and he scored.

Haaland then converted a 70th minute penalty after Alvarez was taken down by Issa Diop. The in-form striker sent Leno the wrong way, launching the ball into the top corner.

He was not done for the day, however, completing his hat-trick deep in added time when he fired home a low first-time left-foot shot from a pass by Sergio Gómez.

With City boss Pep Guardiola still recovering from back surgery, assistant manager Juanma Lillo took charge.

"I think [Guardiola] misses us, we also miss him sometimes too," Haaland said. "So we look forward to having him back."