Manchester United hit AZ for four to end the Europa League group stages with a flourish.

The 4-0 victory was a big statement, with all four goals coming in the second half.

The first 45 minutes was terribly dull, and that made the second half which followed all the more exhilarating.

There were some standout performances, here is a look at the four players who stood out…

(Photo by Matthew Peters/Manchester United via Getty Images)

RONALDO NEEDS TO STOP WHINING.

Mason Greenwood

Mason Greenwood had three shots and scored two goals, with his first coming from outside the box.

The teenage striker is now up to six goals for the season, the same tally as Anthony Martial.

He is clinical and it is up to United to create him more chances.

Greenwood showed his creative side, with three key passes of his own, in addition to winning a penalty.

(Photo by John Peters/Manchester United via Getty Images)

Brandon Williams

Brandon Williams was back in the team after two games out and made a strong impression.

The left-back will be pleased to have kept a clean sheet after his defensive discipline was questioned after displays against Aston Villa and Sheffield United.

Williams was unleashed in the second half from an attacking perspective and really helped open the AZ defence.

This was a strong case put forward by the teenager for a recall in the Premier League.

(Photo by John Peters/Manchester United via Getty Images)

Juan Mata

The experienced Spaniard really was not very good in the first half, and didn’t have any kind of impact on the game.

The second 45 was totally different as Mata helped carve Alkmaar open.

He ended the game with two assists and scored the penalty. These were his first assists of the season and this was also his first goal.

Mata deserves credit for the way he turned it around in the second half.

(Photo by Ed van de Pol/Soccrates/Getty Images)

Sergio Romero

Sergio Romero is becoming a master of clean sheets. He has not conceded a goal in his four Europa League performances this season.

Romero made two crucial saves to keep this record up, and is proving his reputation as the best back up goalkeeper in football.

He deserves to keep his place for the Europa League knockout rounds.

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