West Ham missed the chance to significantly close the gap to safety after being held to a 0-0 draw at home by Bournemouth.
Nuno Espirito Santo's sideare now two points behind Nottingham Forest, who host Liverpool on Sunday, and four behind Tottenham ahead of the north London derby with Arsenal, live on Sky Sports.
West Ham racked up an expected goals total of 2.82 from 20 shots, although only three were on target and they couldn't find a way past goalkeeper Djordje Petrovic, who made a crucial late save from former Bournemouth striker Callum Wilson's toe-poked effort.
Bournemouth had four shots on target, yet their best moment came at the end of winger Rayan's driving run from inside his own half during the second period, which ended with his shot clipping the outside of the left post.
Crysencio Summerville was West Ham's brightest player. His speed and unpredictability caused Bournemouth problems throughout, with his deflected shot late on landing on the roof of the net.
West Ham striker Taty Castellanos also went close in the second half, with his powerful overhead kick missing the target before Jarrod Bowen fired over deep into stoppage time from close range.