Leeds ran riot at West Brom to hammer the Baggies 5-0 and 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 kept back-to-back clean sheets for the first time this season to climb to 11th.
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.
The teams are going in opposite directions as Leeds’ roller coaster season continues, while second-bottom Albion are already facing an instant return to the Sky Bet Championship.
They rolled the dice and appointed Allardyce after sacking Slaven Bilic this month and Sunday’s impressive point at Liverpool suggested the new manager’s methods had already sunk in.
But his side capitulated at home on Tuesday – not for the first time this season – and they have conceded 13 goals in their last three home games to sit five points from safety.
Their displays against the bigger sides – having taken a point off Manchester City and Chelsea, while losing by one goal against Manchester United and Tottenham – has not been in doubt. Albion needed to match it against others.