West Ham's self-destructive defending is a real problem, Andy Carroll was sorely missed and Joe Hart should have done better with Brighton's second - FIVE THINGS WE LEARNED

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West Ham were rocked at the London Stadium as Brighton inflicted more misery on Slaven Bilic with a comprehensive victory. 

Glenn Murray scored a goal either side of Jose Izquierdo's wonder strike to earn their first away win of the season.

Sportsmail's KIERAN GILL was on hand to highlight five things we learned from the Premier League clash. 

Brighton earned their first away win of the season with a convincing 3-0 drubbing of West Ham

Glenn Murray is Brighton's best header of the ball, so why did West Ham leave him free to score such a simple opening goal?

Pascal Gross' delivery was a peach but, with the amount of bodies in the box, no-one in claret and blue thought to properly mark the main man. Their set-piece defending needs work.

It was shoot-yourself-in-the-foot stuff from West Ham.

West Ham only had themselves to blame for allowing Glenn Murray to head in the opening goal

Andy Carroll's costly and foolish sending off at Burnley hit home here.

One of Slaven Bilic's rules is that injured or suspended players come show their support, so Carroll was at the London Stadium to watch his team in his absence.

He must have cringed watching inviting crosses go to waste. His physical presence was certainly missed.

With him out and Diafra Sakho injured, West Ham's striker options were limited. They were left with Javier Hernandez, who dropped deep on occasion.

Javier Hernandez endured a difficult night as the Hammers appeared to miss Andy Carroll

Carroll's red card at Burnley last week stopped him from playing tonight and it proved costly

Jose Izquierdo's strike for Brighton's second goal was exquisite – but Joe Hart should have done better. The England No 1 got a full hand to it and had to be stronger in that situation.

Is it time to give Adrian a go? West Ham's second-choice goalkeeper is yet to feature in the Premier League this season but has complained about his lack of chances.

Bilic may not be around long enough to drop the England international after this.

Jose Izquierdo's strike for the second goal was exquisite but Joe Hart should have done better

Hart has not made the best of starts at West Ham and could be replaced by Adrian in goal soon

Going into this, Brighton had scored once in their last four away league fixtures and picked up a single point when playing against 10 men for more than an hour at Watford.

It was risky to try to shut up shop after scoring the opener as West Ham attacked relentlessly. Credit to Chris Hughton, however, because it worked.

Yellow shirts threw themselves in front of everything, with Shane Duffy especially heroic. Brighton survived the spell of pressure then scored for 2-0. Job done.

Helicopter by Bloc Party – with chorus lyrics of 'Are you hoping for a miracle?' – was the first song played after the half-time whistle. It said it all.

West Ham's last Premier League fixture on a Friday night was against Tottenham in May, when a 1-0 win killed the title dream of their London rivals.

That night, the place was buzzing and the players were well up for it. West Ham struggled to get the 56,977-strong crowd going at all here.