LEEDS ran riot at West Brom last night, hammering them 5-0 to claim their biggest Premier League win for 17 years.

A first half blitz from the visitors blew Albion away to leave Sam Allardyce looking for his first win as boss.

Romaine Sawyers’ awful own goal set the tone for the hosts, before quickfire first half goals from Ezgjan Alioski, Jack Harrison and Rodrigo.

Raphinha also netted in the second half, as Leeds recorded their biggest victory in the top flight since a 6-1 win over Charlton in 2003.

Marcelo Bielsa’s side climbed up to 11th as a result of the win.

Leeds have taken strides forward, using their risk and reward philosophy, and they demolished a Baggies side who were promoted to the Premier League with them last season.

West Brom were behind after nine minutes following a nightmare moment for Sawyers.

Under pressure from Rodrigo, the midfielder tried a blind backpass to Sam Johnstone and failed to spot where the goalkeeper was.

It meant Johnstone, who had moved to the left of his goal, could only watch on as the ball rolled in.

No team have scored more own goals than the Baggies’ three in the Premier League this season and they had gifted Leeds a platform.

It was one Bielsa’s men took, as they bossed possession, with Albion never looking like mounting a comeback.

And they had no chance after Leeds netted three times in nine minutes.

Alioski started the goalrush after 31 minutes when he spectacularly rifled the ball in off the post from the edge of the area.

It then got worse for the hosts five minutes later when the excellent Harrison swapped passes with Patrick Bamford, turned Darnell Furlong and found the top corner from close range.

Leeds were rampant and they continued to embarrass their hosts, making it 4-0 five minutes before the break when Rodrigo’s shot from 18 yards out hit Dara O’Shea and deflected in.

It was another disaster for Albion but at least they showed some fight in the second half, with Illan Meslier denying Grady Diangana early on.

But Leeds remained in cruise control and added the gloss with 18 minutes left when Raphinha wrapped up a sweeping move on the right by cutting inside and finding the top corner from the edge of the box.