Morgan Gibbs-White's late penalty fired Nottingham Forest to a crucial 2-1 win over West Ham that left their relegation rivals in deep trouble on Tuesday.

Sean Dyche's side fell behind to Murillo's early own goal at the London Stadium.

But West Ham had a second goal from Crysencio Summerville controversially ruled out by VAR for the tightest of offside decisions.

Forest rubbed salt into West Ham's wounds with a stirring fightback as Nicolas Dominguez equalised before Gibbs-White netted from the spot after another VAR call went the visitors' way.

Fourth-bottom Forest are now seven points clear of third-bottom West Ham with 17 games left in the fight for survival.

Hammers boss Nuno Espirito Santo said last weekend's dismal 3-0 defeat against bottom of the table Wolves was the worst of his managerial career.

But this painful loss was even more damaging to their hopes of avoiding a first season in the Championship since 2011-12.

West Ham have gone 10 games without a win, managing just one point from their last six matches to leave Nuno facing calls for his sacking just months after arriving at the east London club.

Ending a run of four successive defeats was a massive boost to Forest's bid to beat the drop under boss Sean Dyche, who replaced Nuno at the City Ground in September.

Nuno was in charge of Forest for 21 months, leading them to their first European berth in three decades, before being sacked in September after a dispute with owner Evangelos Marinakis over the club's transfer policy.

He has been unable to replicate his Forest success with West Ham.

Since Nuno took charge on September 27 they have averaged fewer points per game than under his much-maligned processor Graham Potter. (AFP)