But Albion turned the first Black Country derby for nine years around with their own rapid response, Semi Ajayi’s header levelling before Pereira’s spot-kick winner soon after the break.

Allardyce’s side remain second bottom but are now just three points from the safety line before Brighton’s game at Leeds, remarkable given their abject form this season.

Wolves’ struggles continued, having won just once in their last nine games, and they remain marooned in 14th, 10 points above the drop zone but 10 adrift of the top five.

The last time the pair met in 2012 Albion won 5-1 at Molineux to spark Mick McCarthy’s sacking and Wolves’ eventual tumble into League One and it was another heroic effort from the Baggies.

David Button, in after Sam Johnstone’s positive coronavirus diagnosis, claimed Boly’s low drive before the visitors took a surprise lead after eight minutes.

Wolves slipped into their recent bad habits when Adama Traore wasted possession 25 yards out before Callum Robinson was clattered by Boly.

It was ruled just inside the area after a VAR check and Pereira sent Rui Patricio the wrong way – with Albion’s muted celebrations sticking to new coronavirus protocols.

Behind for the ninth straight game, Wolves tried to respond and Kieran Gibbs escaped when the ball hit his hands after Button’s miscued punch.

Traore shot over and Leander Dendoncker tested Button as Albion began to invite their hosts on but stayed firm.

They even came close to doubling their lead when Kamil Grosicki nodded through to Robinson, only for Patricio to deny the striker at close range.

It looked like it would prove costly as, despite Albion visibly growing in confidence, their soft centre was exposed when Wolves turned the game with two goals in five minutes.

The first came seven minutes before the break when Boly held up Pedro Neto’s free-kick to flick it to Silva and, with the grounded Pereira playing him onside, the striker found the bottom corner from six yards.

Defender Boly had returned to aid Wolves against Albion’s set-piece threat but he struck a second blow at the other end two minutes before the break.

Jake Livermore and Ajayi failed to clear Joao Moutinho’s corner and Boly swept in from close range.

Albion looked to have caved – two defensive lapses undermining an improved performance – before they struck twice in four minutes to stun their hosts.

They levelled after 52 minutes when Dara O’Shea’s long throw was flicked on by Kyle Bartley and Ajayi’s glancing header looped in at the far post.

Then, with Wolves reeling, Grosicki found Robinson and he was felled by Conor Coady as he tried to turn in the box. Pereira swept in his second penalty to win it.

It was the first time Albion had come from behind to lead this season and it was one they never lost.

Wolves’ reaction was frantic and, although Silva dragged wide, they failed to recover with Patrick Cutrone wasting their best late chance when his volley bounced over.